Dyfyniad APA

(1963). Science: Nos 3562-3574. American association for the advancement of science.

Dyfyniad Arddull Chicago

Science: Nos 3562-3574. Lancaster: American association for the advancement of science, 1963.

Dyfyniad MLA

Science: Nos 3562-3574. American association for the advancement of science, 1963.

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