Williams, Melvin, author
McGraw-Hill, 2013
Buku Teks
Petersen, Donald J.
An Aspen Publication, 1981
Buku Teks
Jelliffe, Derrick B., author
Office of War on Hunger Agency for International Development , 1969
Buku Teks
Aronson, Susan S.
HarperCollins Publisher Inc., 1991
Buku Teks
by Mitch Blair ... [et al.]
Oxford University Press, 2004
Buku Teks