Dyfyniad APA

(2001). Drugs and alcohol today. Emerald Group Publishing Limited.

Dyfyniad Arddull Chicago

Drugs and Alcohol Today. Bingley, UK: Emerald Group Publishing Limited, 2001.

Dyfyniad MLA

Drugs and Alcohol Today. Emerald Group Publishing Limited, 2001.

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