World Health Organization. (1987). Guidelines for the toxicological and clinical assessment and post-registration surveillance of steroidal contraceptive drugs (First edition.). World Health Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)World Health Organization. Guidelines for the Toxicological and Clinical Assessment and Post-registration Surveillance of Steroidal Contraceptive Drugs. First edition. World Health Organization, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.