Acuff, F. Gene
The Dryden Press, 1973
Buku Teks
Lemert, Charles C.
Southern Illinois University Press, 1979
Buku Teks
Rotterdam University Press, 1974
Buku Teks
Weinberg, Meyer
Prentice Hall Inc., 1965
Buku Teks
Mannheim, Karl
Harcourt, Brace, 1951
Buku Teks