Dyfyniad APA

(1969). BIOLOGICAL ABSTRACTS (J). INDIVIDUAL BIOLOGIST, BIOLOGICAL INDUSTRIES..

Dyfyniad Arddull Chicago

BIOLOGICAL ABSTRACTS (J). USA: INDIVIDUAL BIOLOGIST, BIOLOGICAL INDUSTRIES., 1969.

Dyfyniad MLA

BIOLOGICAL ABSTRACTS (J). INDIVIDUAL BIOLOGIST, BIOLOGICAL INDUSTRIES., 1969.

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