editors, George S. Bridgges, Joseph G. Weis, Robert D. Crutchfield
Pine Force Press, 1996
Buku Teks
Fitz-Gibbon, Kate, author
Routledge, 2018
Buku Teks
Wright, Burton, author
W.B. Saunders, 1978
Buku Teks
Abadinsky, Howard, author
Prentice-Hall, 1979
Buku Teks
Bohm, Robert M., author
McGraw-Hill, 2002
Buku Teks