Não informado. (1971). American Family Physician. American Academy of Family Physicians.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. American Family Physician. Kansas City, Kan: American Academy of Family Physicians, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. American Family Physician. American Academy of Family Physicians, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.