In this article, LDS historian Davis Bitton guides readers on how to determine if a book is anti-Mormon. He makes some great points:
The Publisher
Books published by faithful Latter-day Saint publishers such as Deseret Book, Horizon, and Covenant Communications, as well as articles appearing in BYU Studies, church magazines, and the online Meridian Magazine can safely be assumed not to be anti-Mormon [...] Not everything published in Latter-day Saint books and periodicals is of the same quality nor is it intended for the same age level. But anyone who refuses to read any such material is depriving himself of some excellent, important work of very high quality [...] Am I suggesting that works produced by other publishers or appearing in other periodicals are necessarily anti-Mormon? No. They may or may not be. Several university presses and nonchurch publishers have brought out important works that deserve a respectful reading. Some of their books are the best treatment of their subject. Examples from a long list of publishers could be cited. Some presses have a very good record of publishing solid, reliable treatments of Mormon subjects. Others have a mixed record or lean strongly toward the negative.
Inaccuracy
Start reading at the beginning. Or turn to a chapter on a subject about which you already know something. If you come across statements that are simply inaccurate or leave a misleading impression, start counting. One or two of these on nonessential matters can perhaps be overlooked. But if they accumulate, if you find yourself saying "Oh, no" or "What?" time after time, the chances are that the book is anti-Mormon.
Interpretation
After deciding what to include, writers explain what it means. Or by the way they tell the story, they imply an interpretation. I am not so tender-eared that the church must always be presented pure as the driven snow. Situations can be complicated. Individuals with tempers and poor judgment sometimes say things or do things we are not proud of. The point of view of outsiders, even if skewed, becomes part of the historical reality and should be recognized and, if possible, understood. But if a book misses no opportunity to cast Mormons as villains, if it always shows the church, its leaders, its people, and its beliefs in the worst possible light, it deserves the anti-Mormon label.
Read the article for more!