APA-referens (7:e uppl.)

Williams, H. A. Marihuana and health a report to the congress from the secretary, department of health, education, and welfare.

Chicago-referens (17:e uppl.)

Williams, Harrison A. Marihuana and Health a Report to the Congress from the Secretary, Department of Health, Education, and Welfare.

MLA-referens (8:e uppl.)

Williams, Harrison A. Marihuana and Health a Report to the Congress from the Secretary, Department of Health, Education, and Welfare.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.