Marcus, George E.
The University of Chicago Press, 1986
Buku Teks
Rosman, Abraham, author
Random House, 1989
Buku Teks
Hammond, Peter, author
Macmillan, 1978
Buku Teks
Routledge, 1996
Buku Teks
Haviland, William A., author
Rinehart and Winston, 1975
Buku Teks