APA استشهاد

Frank, N. H. (1950). Introduction to electricity and optics (2nd ed.). McGraw-Hill.

استشهاد بنمط شيكاغو

Frank, Nathaniel H. Introduction to Electricity and Optics. 2nd ed. New York: McGraw-Hill, 1950.

MLA استشهاد

Frank, Nathaniel H. Introduction to Electricity and Optics. 2nd ed. McGraw-Hill, 1950.