Dyfyniad APA

(1998). Phisycians' desk reference (52 ed.). Medial Economics Company.

Dyfyniad Arddull Chicago

Phisycians' Desk Reference. 52 ed. Rockville: Medial Economics Company, 1998.

Dyfyniad MLA

Phisycians' Desk Reference. 52 ed. Medial Economics Company, 1998.

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