APA

National Institute of Mental Health (U.S.), . (1971). Answer is understanding: a story of drug phenomenon based on film series, the distant drummer. [Washington, D.C: .

Chicago

National Institute of Mental Health (U.S.), . 1971. Answer is understanding: a story of drug phenomenon based on film series, the distant drummer. [Washington, D.C: .

Harvard

National Institute of Mental Health (U.S.), . (1971). Answer is understanding: a story of drug phenomenon based on film series, the distant drummer. [Washington, D.C: .

MLA

National Institute of Mental Health (U.S.), . Answer is understanding: a story of drug phenomenon based on film series, the distant drummer. [Washington, D.C: . 1971.