edited by Roy O. Grepp
Schenkman Publishing Company, Inc., 1963
Buku Teks
Freedman, Ronald, author
Irvington, 1975
Buku Teks
Yurni Satria, author
National Family Planning Coordinating Board , 2000
Buku Teks
Henry, Louis, author
Elsevier, 1972
Buku Teks
Stycos, J. Mayone, author
Cornell University Press, 1968
Buku Teks