APA

National Institute of Mental Health (U.S.), . (1971). Marihuana, some questions & answers. [Washington, D.C: .

Chicago

National Institute of Mental Health (U.S.), . 1971. Marihuana, some questions & answers. [Washington, D.C: .

Harvard

National Institute of Mental Health (U.S.), . (1971). Marihuana, some questions & answers. [Washington, D.C: .

MLA

National Institute of Mental Health (U.S.), . Marihuana, some questions & answers. [Washington, D.C: . 1971.