APA (7th ed.) Citation

Timbie, W. H., & Willson, F. G. (1949). Industrial electricity.

Chicago Style (17th ed.) Citation

Timbie, William H., and Frank. G. Willson. Industrial Electricity. New York, 1949.

MLA (9th ed.) Citation

Timbie, William H., and Frank. G. Willson. Industrial Electricity. 1949.