Kubasek, Nancy K.
Pearson Prentice Hall, c2009
Buku Teks
Moore, Gary A.
South-Western Publishing, 1987
Buku Teks
Fisher, Bruce D
West Publishing Company, 1986
Buku Teks
Blackburn, John D.
Richard D. Irwin , 1985
Buku Teks
Brody, David Eliot
D.C. Health, 1986
Buku Teks