I've read the edition by Signature Books. It's a fascinating book, no matter how one feels about Joseph Smith. I feel that Hullinger stayed true to his purpose, where he writes in his Introduction:
Whatever motives led Joseph Smith to produce the Book of Mormon—whether he was trying to sway the world for his own purposes or was trying to affect the world in a positive way—we must still deal with the way he chose to do it, and that means looking seriously at the obvious appeal of the Book of Mormon which [p.xvi] remains just as strong today as it was in 1830. I prefer to put the best construction on Joseph Smith and his intentions; to let his expressed intentions speak for themselves and then to draw conclusions from the evidence, as I understand and interpret it. Such an approach, too often missing in Mormon and non-Mormon discussions of early Mormonism allows for a more charitable—and what I believe is a more accurate—appraisal of Joseph Smith than has been previously achieved.
Since I've never liked trying to write a book review of my own, I've selected a review by Sandra Tanner, and with the permission of the author here is her appraisal of the book:
Mormon Answer to Skepticism:
Why Joseph Smith Wrote the Book of Mormon
by Sandra Tanner
President of the Board
Utah Lighthouse Ministry
Robert Hullinger's book, Mormon Answer to Skepticism, examines the major thought patterns of the Book of Mormon in relation to Joseph Smith's personal development. Why did Smith view the American Indians as Israelites? Was he familiar with View of the Hebrews? What influence did Masonry have on the Book of Mormon? Was he disturbed by the religious controversies in the New England area?
Hullinger argues that Joseph Smith was responding to the critics of the Bible in his day, such as Thomas Paine. Paine, often referred to as the father of the American Revolution, became notorious for writing The Age of Reason, published in 1793–94, advocating deism and arguing against Christian doctrines.
Lucy Smith, Joseph's mother, wrote about the family's encounter with the writings of Thomas Paine. Shortly before Joseph Smith was born, while the Smiths were living in Tunbridge, Vermont, Lucy became interested in religion and started attending the Methodist meetings. Asael Smith, Lucy's father-in-law, disapproved and tried to convince Joseph Smith, Sr., to quit attending. Lucy wrote that Asael "came to the door one day and threw Tom Pains age of reason into the house and angrily bade him read that until he believed it.
Prophecy in the Book of Mormon is a massive response to deistic objections. Smith traced prediction back to the time of Jared, including the note that prophecies from the time of Adam were on the brass plates of Laban (1 Ne 3:20) and, soon after the publication of the Book of Mormon, produced prophecies of Adam himself. . . .
No room was allowed for Paine's charge that the prophets were "liars and impostors," for Smith made the gift of prophecy depend upon merit. Prophets were identified by their genealogies, their properly recorded calls from God, their exemplary lives, and their fulfilled predictions.
Smith generally acknowledged the objections that skeptics had toward prophecy. He detailed the case against it as he saw it through the person of Korihor, the arch-villain and antichrist of the Book of Mormon. Korihor "began to preach unto the people against the prophecies which had been spoken by the prophets, concerning the coming of Christ" (Alma 30:6).
Further on, Hullinger states:
Fulfilled prophecy was meant to inspire faith in future fulfillment. By including signs of the coming birth and death of Christ and notice of their accomplishment in the Book of Mormon, Smith pointed that reader who had been looking for such signs to those of the coming millennium. By what the Bible and Book of Mormon describe as signs of the last days, including the discovery of the latter book, the reader was encouraged and challenged to expect the imminent wind-up of this world's affairs and the beginning of the millennium.
In discussing Smith's view of revelation, Hullinger concludes:
In defense of God, Joseph Smith assailed the natural revelation of deism and the static revelation of traditional Christianity. To enable revealed religion to overcome natural religion, however, he supported the deistic attack upon the view that the present Bible is God's complete and errorless revelation to mankind. Destruction of the traditional view left him free to preserve special revelation by his own means.
 Lavina Fielding Anderson, ed., Lucy's Book: A Critical Edition of Lucy Mack Smith's Family Memoir, Signature Books, 2001, p. 291.
 Robert N. Hullinger, Mormon Answer to Skepticism: Why Joseph Smith Wrote the Book of Mormon, Clayton Publishing House, 1980, p. 141.
 Ibid., p. 142.
 Ibid., p. 150