Bettelheim, Frederick A., author
Thomson, Brooks/Cole, 2007
Buku Teks
Bettelheim, Frederick A., author
Harcourt Brace Jovanovich College, 1991
Buku Teks
Landesberg, Joseph M., 1903-1994, author
Brooks/Cole Cengage Learning, 2012
Buku Teks
by Horace D. Crockford [and others]
John Wiley & Sons, 1975
Buku Teks
Hamblin, W. Kenneth (William Kenneth), 1928-, author
Burgen Publishing, 1967
Buku Teks