Dyfyniad APA

McPartland, B. J., Hartwell, F. P., & McPartland, J. F. (2011). McGraw-Hill's National Electrical Code 2011 handbook (27th ed.). McGraw-Hill Professional Pub.

Dyfyniad Arddull Chicago

McPartland, Brian J., Frederic P. Hartwell, and Joseph F. McPartland. McGraw-Hill's National Electrical Code 2011 Handbook. 27th ed. New York: McGraw-Hill Professional Pub, 2011.

Dyfyniad MLA

McPartland, Brian J., et al. McGraw-Hill's National Electrical Code 2011 Handbook. 27th ed. McGraw-Hill Professional Pub, 2011.

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