Dyfyniad APA

edited by Pycroft, A. (2015). KEY concepts in substance misuse. Sage.

Dyfyniad Arddull Chicago

edited by Pycroft, Aaron. KEY Concepts in Substance Misuse. Sage, 2015.

Dyfyniad MLA

edited by Pycroft, Aaron. KEY Concepts in Substance Misuse. Sage, 2015.

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