Alan Guttmacher Institute. (1996). Readings on emergency contraception. Alan Guttmacher Institute.
Citazione stile Chigago Style (17a edizione)Alan Guttmacher Institute. Readings on Emergency Contraception. New York: Alan Guttmacher Institute, 1996.
Citatione MLA (9a ed.)Alan Guttmacher Institute. Readings on Emergency Contraception. Alan Guttmacher Institute, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.