Sollecito, William A., author
Jones & Bartlett Learning, 2013
Buku Teks
Weiss, Donna, author
Jones & Bartlett Learning, 2014
Buku Teks
edited by John J. Glynn, David A. Perkins
W.B. Saunders, 1995
Buku Teks
Goel, S. L., author
Deep & Deep Publications PVT, 2001
Buku Teks
Christman, Luther P., author
Westview Press, 1981
Buku Teks