APA (7th ed.) Citation

Kloeffler, R. G., Brenneman, J. L., & Kerchner, R. M. (1934). Direct-current machinery. Macmillan.

Chicago Style (17th ed.) Citation

Kloeffler, Royce Gerald, Jesse Lamar Brenneman, and Russell Marion Kerchner. Direct-current Machinery. New York: Macmillan, 1934.

MLA (9th ed.) Citation

Kloeffler, Royce Gerald, et al. Direct-current Machinery. Macmillan, 1934.