Petri, Herbert L, author
Cengage Learning, 2013
Buku Teks
edited by John W. Atkinson, Norman T. Feataher
Robert E. Krieger, 1966
Buku Teks
edited by Chalmers L. Stacey and Manfred F. DeMartino
Howard Allen, 1958
Buku Teks
Schunk, Dale H., author
Prentice-Hall, 1996
Buku Teks
Bindra, Dalbir
Ronald Press, 1959
Buku Teks