Dyfyniad APA

(1951). Vol. 81, № 5-6; Vol. 83, № 4; Physical Review. Second Series. 1951.

Dyfyniad Arddull Chicago

Vol. 81, № 5-6; Vol. 83, № 4; Physical Review. Second Series. 1951, 1951.

Dyfyniad MLA

Vol. 81, № 5-6; Vol. 83, № 4; Physical Review. Second Series. 1951, 1951.

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