Almack, J. C. (1940). Straight thinking on narcotics: Alcohol, tobacco, opium, morphine, cocaine and marihuana. Pacific Press.
Cita Chicago (17th ed.)Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. California: Pacific Press, 1940.
Cita MLA (9th ed.)Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. Pacific Press, 1940.
Atenció: Aquestes cites poden no estar 100% correctes.