Ross, Martin J., author
Prentice-Hall, 1977
Buku Teks
edited by Robert M. Hashway
Praeger, 1990
Buku Referensi
edited by David Nice
Councils and Education Press, 1986
Buku Teks
Stoff, Sheldon Ptaschevitch, author
Harper & Row , 1969
Buku Teks
Marland, Sidney P., author
McGraw-Hill, 1974
Buku Teks