APA (7th ed.) Citation

Pender, H., & Del Mar, W. A. (1949). Electrical engineers’ handbook.

Chicago Style (17th ed.) Citation

Pender, Harold, and William Arthur Del Mar. Electrical Engineers’ Handbook. New York, New York : Willey, 1949.

MLA (9th ed.) Citation

Pender, Harold, and William Arthur Del Mar. Electrical Engineers’ Handbook. 1949.