Udhibiti wa uzazi
Jensen, Jeffrey T.; Mishell, Daniel R. Jr. (March 19, 2012). "Family Planning: Contraception, Sterilization, and Pregnancy Termination", pp. 215–272, in Lentz, Gretchen M.; Lobo, Rogerio A.; Gershenson, David M.; Katz, Vern L. (eds.) Comprehensive Gynecology, 6th ed. Philadelphia: Mosby Elsevier, ISBN 978-0-323-06986-1.