Smyth, Terry
Macmillan, 1996
Buku Teks
Petersen, Donald J.
An Aspen Publication, 1981
Buku Teks
Purnell, Larry D.
F.A. Davis, 2005
Buku Teks
Menninger, William C.
Science Research Associates , 1958
Buku Teks
Donald L. Zimmerman and Denise G. Osborn-Harrison, editors
NY Springer Publishing Company, 2017
Buku Teks