Dyfyniad APA

(2004). McGraw-Hill Concise Encyclopedia of Chemistry. American: McGraw -Hill.

Dyfyniad Arddull Chicago

McGraw-Hill Concise Encyclopedia of Chemistry. American: McGraw -Hill, 2004.

Dyfyniad MLA

McGraw-Hill Concise Encyclopedia of Chemistry. American: McGraw -Hill, 2004.

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