Hoover, Stewart V.
Addison-Wesley, 1990
Buku Teks SO
Smith, Marilyn Z.
Houghton-Mifflin, 1974
Buku Teks SO
edited by Rachel Brown-Chidsey, Kristina J. Andren
The Guilford Press, 2005
Buku Teks
Keedy, Mervin L.
Addison-Wesley, 1986
Buku Teks SO
edited by Rachel Brown-Chidsey
Guildford Press, 2005
Buku Teks