Dyfyniad APA

(1946). Science: Nos 26662 - 2687. American association for the advancement of science.

Dyfyniad Arddull Chicago

Science: Nos 26662 - 2687. Lancaster: American association for the advancement of science, 1946.

Dyfyniad MLA

Science: Nos 26662 - 2687. American association for the advancement of science, 1946.

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