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 (8th ed.) Citation

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