Stewart, Rosemary
Prentice-Hall, 1982
Buku Teks
Webber, Ross A.
Richard D. Irwin, 1981
Buku Teks
United Nations Population Fund
UNFPA, 1994
Buku Teks
Mooney, Gavin H.
MacMillan Press , 1980
Buku Teks
Coulmas, Florian
Cambridge University Press, 2005
Buku Teks