World Health Organization. (1971). Family planning in health services; report of a WHO expert committee. s.n.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Health Organization. Family Planning in Health Services; Report of a WHO Expert Committee. Geneva: s.n, 1971.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Health Organization. Family Planning in Health Services; Report of a WHO Expert Committee. s.n, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.