APA استشهاد

Pugh, E. M., & Pugh, E. W. (1970). Principles of electricity and magnetism (Ed.2.). Addison - Wesley.

استشهاد بنمط شيكاغو

Pugh, Emerson M., و Emerson W. Pugh. Principles of Electricity and Magnetism. Ed.2. London: Addison - Wesley, 1970.

MLA استشهاد

Pugh, Emerson M., و Emerson W. Pugh. Principles of Electricity and Magnetism. Ed.2. Addison - Wesley, 1970.