APA (7th ed.) Citation

Harms, E. (1973). Drugs and youth: The challange of today. Pergamon Pr.

Chicago Style (17th ed.) Citation

Harms, Ernest. Drugs and Youth: The Challange of Today. New York [u.a.]: Pergamon Pr, 1973.

MLA (9th ed.) Citation

Harms, Ernest. Drugs and Youth: The Challange of Today. Pergamon Pr, 1973.