Dyfyniad APA

(1964). BioScience. Washington, D.C.: American Institute of Biological Sciences.

Dyfyniad Arddull Chicago

BioScience. Washington, D.C.: American Institute of Biological Sciences, 1964.

Dyfyniad MLA

BioScience. Washington, D.C.: American Institute of Biological Sciences, 1964.

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