Dyfyniad APA

Purcell, E. M. (1985). Electricity and magnetism (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Purcell, Edward M. Electricity and Magnetism. 2nd ed. New York: McGraw-Hill, 1985.

Dyfyniad MLA

Purcell, Edward M. Electricity and Magnetism. 2nd ed. McGraw-Hill, 1985.

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