World Health Organization. (1987). Guidelines for the toxicological and clinical assessment and post-registration surveillance of steroidal contraceptive drugs (First edition.). World Health Organization.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization. Guidelines for the Toxicological and Clinical Assessment and Post-registration Surveillance of Steroidal Contraceptive Drugs. First edition. Geneva: World Health Organization, 1987.
Цитирование MLA (8-е изд.)World Health Organization. Guidelines for the Toxicological and Clinical Assessment and Post-registration Surveillance of Steroidal Contraceptive Drugs. First edition. World Health Organization, 1987.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.