Dyfyniad APA

Ratanawijitrasin, S., & Wondemagegnehu, E. (2002). Effective drug regulation a multicountry study. World Health Organization.

Dyfyniad Arddull Chicago

Ratanawijitrasin, Sauwakon, and Eshetu Wondemagegnehu. Effective Drug Regulation a Multicountry Study. Geneva: World Health Organization, 2002.

Dyfyniad MLA

Ratanawijitrasin, Sauwakon, and Eshetu Wondemagegnehu. Effective Drug Regulation a Multicountry Study. World Health Organization, 2002.

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