Holy Bible, online at http://www.blueletterbible.org.
The Book of Mormon, Doctrine and Covenants, Pearl of Great Price (online).
http://www.ldscatalog.com (3 book combo, item
83419000).
Book of Mormon - Teacher and Student Manuals.
http://www.ldscatalog.com (item 35683000).
Online, mirrored site for teacher, student
Pearl of Great Price Student Manual (Religion 327).
http://www.ldscatalog.com (item 35852000).
Online, mirrored site
Gospel Principles (1997 version as PDF, online, mirrored site; html version).
http://www.ldscatalog.com (item 31110000).
For the html version, visit www.lds.org -> A-Z Index -> G -> Gospel Doctrine
Manuals.
Gospel Fundamentals (2002 version).
http://www.ldscatalog.com (item 31129000)
Preach My Gospel (2004 version).
http://www.ldscatalog.com (item 36617000)
Online,
mirrored site
Religion 430-431 - Doctrines of the Gospel Student Manual (2004).
http://www.ldscatalog.com (item 32501000).
Online, mirrored site
Religion 234–235 - Eternal Marriage Student Manual (2001)
Online
The Way to Perfection (1931)
by former LDS Church President Joseph Fielding Smith
http://www.confettibooks.com
Mormon Doctrine, by Bruce R. McConkie.
http://www.ldsliving.com (item 13244CBK).
Teachings of Presidents of the Church - Joseph F. Smith.
Teachings of Presidents of the Church - Brigham Young.
http://www.ldscatalog.com (items 35744000 and
35554000).
Teachings of Presidents of the Church - Joseph Smith (2008)
Online, mirrored site
http://www.ldscatalog.com (item 36481000).
Teachings of the Prophet Joseph Smith (copyright 1938 - Joseph
Fielding Smith, 2002 - Covenant Communications, Inc).
http://www.ldsliving.com (item 13391CBK, ISBN
1-59156-028-4).
http://www.confettibooks.com
Book of Mormon Reference Companion.
http://www.ldsliving.com (item 14383CBK).