APA Edition Citation

Harnwell, G. P. (1949). Principles of electricity and electromagnetism (2nd ed.). McGraw-Hill book company, inc..

Chicago Edition Citation

Harnwell, Gaylord Probasco. Principles of Electricity and Electromagnetism. 2nd ed. New York: McGraw-Hill book company, inc., 1949.

MLA Edition Citation

Harnwell, Gaylord Probasco. Principles of Electricity and Electromagnetism. 2nd ed. McGraw-Hill book company, inc., 1949.