Weber, Janet
J.B. Lippincott, 2001
Buku Teks
Bonehill, Jane
BlackWell Publishing, 2007
Buku Referensi
edited for the IPPF by Ronald L. Kleinman
International planned parenthood federation , 1986
Buku Teks
Downie, George
Churchill Livingstone, 2010
Buku Teks
Gahart, Betty L.
Mosby , 1995
Buku Referensi