Chang, R. (2005). Chemistry. McGraw-Hill.
Dyfyniad Arddull ChicagoChang, Raymond. Chemistry. McGraw-Hill, 2005.
Dyfyniad MLAChang, Raymond. Chemistry. McGraw-Hill, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Chang, R. (2005). Chemistry. McGraw-Hill.
Dyfyniad Arddull ChicagoChang, Raymond. Chemistry. McGraw-Hill, 2005.
Dyfyniad MLAChang, Raymond. Chemistry. McGraw-Hill, 2005.