Bogue, Donald
University of Chicago, 1967
Buku Teks
United State. USAID, author
USAID, 2011
Buku Referensi
Haryono Suyono, author
State Ministry for Population/NFPCB, 1995
Buku Teks
edited by Anke Niehof and Firman Lubis.
KITLV Press, 2003
Buku Teks
Everest, Suzanne, author
Bailliere Tindall , 1998
Buku Teks