Dyfyniad APA

McGraw-Hill Book Company & Parker, S. P. (1983). McGraw-Hill encyclopedia of chemistry. McGraw-Hill.

Dyfyniad Arddull Chicago

McGraw-Hill Book Company and Sybil P. Parker. McGraw-Hill Encyclopedia of Chemistry. New York: McGraw-Hill, 1983.

Dyfyniad MLA

McGraw-Hill Book Company and Sybil P. Parker. McGraw-Hill Encyclopedia of Chemistry. McGraw-Hill, 1983.

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