Dyfyniad APA

(1923). Vol. 22, № 1-6; Physical Review. Second Series. 1923.

Dyfyniad Arddull Chicago

Vol. 22, № 1-6; Physical Review. Second Series. 1923, 1923.

Dyfyniad MLA

Vol. 22, № 1-6; Physical Review. Second Series. 1923, 1923.

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