Brody, David Eliot, author
D.C. Health, 1986
Buku Teks
Dunfee, Thomnas W., author
Prentice-Hall, 1983
Buku Teks
Lieberman, Jethro K.
Harcourt Brace Jovanovic, 1989
Buku Teks
Meiners, Roger E., author
Thomson/West , 2006
Buku Teks
Blackburn, John D., author
Irwin , 1991
Buku Teks