Greene, Walter H.
Waveland Press, 1984
Buku Teks SO
edited by Betty P. Mathews
Third Party Publishing, 1982
Buku Teks SO
Black, Jill M.
Jossey-Bass, 2010
Buku Teks
Read, Donald A.
Janes and Bartlett Publihers, 1997
Buku Teks SO
by Randall R. Cottrell, James T. Girvan, Denise M. Seabert, Caile Spear, James F. McKenzie
Pearson Education, 2018
Buku Teks SO