edited by Michael Novak
Charles Scribner's Sons, 1968
Buku Teks
Blau, Joseph L., author
Prentice-Hall, 1965
Buku Teks
Blau, Joseph L., author
Prentice-Hall, 1958
Buku Teks
Mittleman, Earl N.
New York University, [date of publication not identified]
Buku Teks
Compiled and edited by Dorothy Nyren Curley, Maurice Kramer, Elaine Fialka Kramer
Continuum, 1989
Buku Referensi