Fisher, Douglas
Ill. Irwin, 1971
Buku Teks
Marcuse, Herbert
Beacon Press, 1991
Buku Teks
Shapiro, Edward
Harcourt Brace Jovanovich, 1982
Buku Teks
Shapiro, Edward
Harcourt Brace Jovanovich, 1974
Buku Teks
Shapiro, Edward
Harcourt Brace Jovanovich, 1978
Buku Teks