Lewis, Barry
Wadsworth and Cengage Learning, 2013
Buku Teks
Feder, Kenneth L.
Mayfield Publishing Company, 1997
Buku Teks
Stein, Philip L.
McGraw-Hill, 1982
Buku Teks
Jolly, Clifford J.
McGraw-Hill, 1995
Buku Teks
by Robert Jurmain, Harry Nelson, Lynn Kilgore, Wenda Trevathan
Wadsworth, 2001
Buku Teks