Cho, Lee-Jay, author
The Univ. of Hawaii Press, 1986
Buku Teks
Artikel Jurnal
Meier, Richard L., author
John Wiley & Sons, 1959
Buku Teks
Yurni Satria, author
National Family Planning Coordinating Board , 2000
Buku Teks
edited by James T. Fawcett
Basic Books, 1973
Buku Teks