Powell, Russell A., 1950-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Montgomery, Robert L., author
Pustaka Binaman Pressindo, 1983
Buku Teks
Mar`at, author
Ghalia Indonesia, 1981
Buku Teks
Rachlin, Howard, author
W.W. Norton, 1970
Buku Teks
edited by Carolyn E. Carlson, Betty Blackwell
J.B. Lippincott , 1978
Buku Teks