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