Aris Ananta
Demographic Institute FE UI, 1991
Buku Teks
Grindstaff, Carl F.
Christopher Publishing House, 1981
Buku Teks
Hartley, Shirley Foster
Prentice-Hall, 1972
Buku Teks
by Timothy King [and others]
The John Hopkins University Press , 1974
Buku Teks
Heer, David M.
Prentice-Hall, 1975
Buku Teks