Dyfyniad APA

(1994). Lexicon of Alcohol and Drug Terms. World Health Organisation.

Dyfyniad Arddull Chicago

Lexicon of Alcohol and Drug Terms. Geneva: World Health Organisation, 1994.

Dyfyniad MLA

Lexicon of Alcohol and Drug Terms. World Health Organisation, 1994.

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