Rosenberg, Alexander, author
John Hopkins University Press, 1980
Buku Teks
Holcomb, Harmon R., author
State University of New York Press, 1993
Buku Teks
Williams, Malcolm, 1953-, author
Routledge, 2000
Buku Teks
Hunt, James H., author
McGraw-Hill, 1980
Buku Teks
Singer, Peter, author
Farrar, Straus & Giroux, 1982
Buku Teks