Goldish, Dorothy M., author
Macmillan, 1990
Buku Teks
Hecht, Harry G.
Prentice-Hall, 1990
Buku Teks
Malinowski, Edmund R., author
John Wiley & Sons, 1980
Buku Teks
Michels, Leo, author
Brooks/Cole, 1996
Buku Teks
Michels, Leo, author
Brooks/Cole, 1993
Buku Teks