Alan Guttmacher Institute & Singh, S. (2006). Unintended pregnancy and induced abortion in the Philippines: Causes and consequences. Guttmacher Institute.
Chicago-viite (17. p.)Alan Guttmacher Institute ja Susheela Singh. Unintended Pregnancy and Induced Abortion in the Philippines: Causes and Consequences. New York: Guttmacher Institute, 2006.
MLA-viite (9. p.)Alan Guttmacher Institute ja Susheela Singh. Unintended Pregnancy and Induced Abortion in the Philippines: Causes and Consequences. Guttmacher Institute, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.