Patricia O’Campo, editor
[, Springer], 2012
eBooks
Rothman, Jack, author
Columbia University Press, 1974
Buku Teks
International Publ., 1970
Buku Teks
Moore, Wilbert E. (Wilbert Ellis), author
Prentice-Hall, 1963
Buku Teks
edited by Eva Etzioni-Halevy and Amitai Etzioni
Basic Books, 1964
Buku Teks