APA-viite (7. p.)

(1972). Third Conference on Prostaglandins in Fertility Control. World Health Organization.

Chicago-viite (17. p.)

Third Conference on Prostaglandins in Fertility Control. Stockholm: World Health Organization, 1972.

MLA-viite (9. p.)

Third Conference on Prostaglandins in Fertility Control. World Health Organization, 1972.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.