Dyfyniad APA

(1925). Vol. 26, № 1-6; Physical Review. Second Series. 1925.

Dyfyniad Arddull Chicago

Vol. 26, № 1-6; Physical Review. Second Series. 1925, 1925.

Dyfyniad MLA

Vol. 26, № 1-6; Physical Review. Second Series. 1925, 1925.

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