Vasta, Ross, author
John Wiley & Sons, 2004
Buku Teks
E. Mavis Hetherington
Buku Teks
Faw, Terry, author
McGraw-Hill , 1989
Buku Teks
Jersild, Arthur T., author
Prentice-Hall, 1968
Buku Teks
Mash, Eric J., author
Wadsworth and Cengage Learning, 1999/2010
Buku Teks