(1949). Vol. 71, № 4; Journal of the American Chemical Society. 1949.
Dyfyniad Arddull ChicagoVol. 71, № 4; Journal of the American Chemical Society. 1949, 1949.
Dyfyniad MLAVol. 71, № 4; Journal of the American Chemical Society. 1949, 1949.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.