Dyfyniad APA

Monteiro, M. G. (1999). Young people and substance use: A manual. World Health Organization.

Dyfyniad Arddull Chicago

Monteiro, Maristela G. Young People and Substance Use: A Manual. Geneva: World Health Organization, 1999.

Dyfyniad MLA

Monteiro, Maristela G. Young People and Substance Use: A Manual. World Health Organization, 1999.

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