United Nations Fund for Population Activities, 1985
Buku Teks
Malthus, Thomas
Oxford University Press, 1993
Buku Teks
Zopf, Paul E,Jr
Mayfield Publishing, 1984
Buku Teks
edited by John F. Kantner, Lee McCaffrey
Lexington Books, 1975
Buku Referensi
Population Institute, 1987
Majalah, Jurnal, Buletin