Dyfyniad APA

(1967). SCIENCE (J). AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE.

Dyfyniad Arddull Chicago

SCIENCE (J). USA: AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, 1967.

Dyfyniad MLA

SCIENCE (J). AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, 1967.

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