APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Harnwell, Gaylord P. Principles of Electricity and Electromagnetism. 2nd ed. New York: McGraw-Hill, 1949.

MLA (9th ed.) Citation

Harnwell, Gaylord P. Principles of Electricity and Electromagnetism. 2nd ed. McGraw-Hill, 1949.