Williams, H. A. Marihuana and health a report to the congress from the secretary, department of health, education, and welfare.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Williams, Harrison A. Marihuana and Health a Report to the Congress from the Secretary, Department of Health, Education, and Welfare.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Williams, Harrison A. Marihuana and Health a Report to the Congress from the Secretary, Department of Health, Education, and Welfare.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.