Almack, J. C. (1940). Straight thinking on narcotics: Alcohol, tobacco, opium, morphine, cocaine and marihuana. Pacific Press.
Chicago-referens (17:e uppl.)Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. California: Pacific Press, 1940.
MLA-referens (9:e uppl.)Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. Pacific Press, 1940.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.