APA (7th ed.) Citation

Bull, H. S. (1939). Direct-current machinery. J. Wiley & sons.

Chicago Style (17th ed.) Citation

Bull, Hempstead Stratton. Direct-current Machinery. New York: J. Wiley & sons, 1939.

MLA (9th ed.) Citation

Bull, Hempstead Stratton. Direct-current Machinery. J. Wiley & sons, 1939.

Warning: These citations may not always be 100% accurate.