Merck. (1999). Chemicals reagents. Darmstadt, Germany: Merck.
Dyfyniad Arddull ChicagoMerck. Chemicals Reagents. Darmstadt, Germany: Merck, 1999.
Dyfyniad MLAMerck. Chemicals Reagents. Darmstadt, Germany: Merck, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.