The official (or "canonized") scriptures of the Mormon Church are the Book of Mormon, Doctrine and Covenants, the Pearl of Great Price, and the Bible. These books are referred to as the standard works. They consider the Bible the least trustworthy scripture. Mormons also refer to the messages of the living prophet and the talks given at general conferences as scripture.
Biblical Christianity teaches that all Scripture is contained in the Bible. It is inspired, inerrant, and contains everything we need for salvation and godly living (2 Timothy 3:15-17).