Biehler, Robert F.
Houghton Miffiln, [date of publication not identified]
Buku Teks
Wilson, John A.R.
McGraw-Hill, 1974
Buku Teks
Stephen N. Elliot [and others]
McGraw-Hill, 2000
Buku Teks
Stephen N. Elliot, Thomas R. Kratochwill, Joan Littlefield Cook, John F. Travers, authors
McGraw-Hill Book , 2000
Buku Teks
Hoy, Anita Woolfolk, 1947-
Allyn and Bacon, 2004
Buku Teks