Cita APA (7a ed.)

Hart, R. H. (1980). Bitter grass: The cruel truth about marijuana (2nd print.). Psychoneurologia Pr.

Cita Chicago Style (17a ed.)

Hart, Roy H. Bitter Grass: The Cruel Truth About Marijuana. 2nd print. Shawnee Mission, Kan: Psychoneurologia Pr, 1980.

Cita MLA (9a ed.)

Hart, Roy H. Bitter Grass: The Cruel Truth About Marijuana. 2nd print. Psychoneurologia Pr, 1980.