Dyfyniad APA

Almack, J. C. (1940). Straight thinking on narcotics: Alcohol, tobacco, opium, morphine, cocaine and marihuana. Pacific Press.

Dyfyniad Arddull Chicago

Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. California: Pacific Press, 1940.

Dyfyniad MLA

Almack, John C. Straight Thinking on Narcotics: Alcohol, Tobacco, Opium, Morphine, Cocaine and Marihuana. Pacific Press, 1940.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.