Dyfyniad APA
(2015). European Drug Prevention Quality Standards (EDPQS) - Achieving QUALITY in Drug Prevention. Centre for Public Health.
Dyfyniad Arddull Chicago
European Drug Prevention Quality Standards (EDPQS) - Achieving QUALITY in Drug Prevention. Liverpool: Centre for Public Health, 2015.
Dyfyniad MLA
European Drug Prevention Quality Standards (EDPQS) - Achieving QUALITY in Drug Prevention. Centre for Public Health, 2015.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.