Dyfyniad APA

(1964). Science: Nos 3614-3626. American association for the advancement of science.

Dyfyniad Arddull Chicago

Science: Nos 3614-3626. Lancaster: American association for the advancement of science, 1964.

Dyfyniad MLA

Science: Nos 3614-3626. American association for the advancement of science, 1964.

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