Stewart, James, 1941-
Brooks/Cole, 1999
Buku Teks
Bartle, Robert Gardner, 1927-
Scott, Foresman, 1968
Buku Teks
Sherwood, G.E.F.
Prentice-Hall, 1946
Buku Teks
Stewart, James, 1941-
Brooks/Cole, 1991
Buku Teks
Larson, Ron, 1941-
Brooks/Cole, 2010
Buku Teks