Hartley, Shirley Foster, author
Prentice-Hall, 1972
Buku Teks
Grindstaff, Carl F., author
Christopher Publishing House, 1981
Buku Teks
edited by Geoffrey Hawthorn
Frank Cass, 1978
Buku Teks
Aris Ananta, author
Demographic Institute FE UI, 1991
Buku Teks
Thomlinson, Ralph
California State University, 1976
Buku Teks