Dyfyniad APA

American Pharmaceutical Association. (1916). The national formulary (4th ed.). The Association.

Dyfyniad Arddull Chicago

American Pharmaceutical Association. The National Formulary. 4th ed. Washington: The Association, 1916.

Dyfyniad MLA

American Pharmaceutical Association. The National Formulary. 4th ed. The Association, 1916.

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