Steinberg, Roberta, author
Prentice-Hall, 1987
Buku Teks
Kramer, Melinda G., author
Prentice-Hall, 1995
Buku Referensi
Buchsbaum, Walter H., author
Prentice-Hall, 1977
Buku Teks
Miller, George
Prentice-Hall, 1986
Buku Teks
Garofalo, Gene, author
Prentice-Hall, 1994
Buku Referensi