APA (7th ed.) Citation

Knoeppel, C. E. (1915). Installing efficiency methods. The Engineering Magazine.

Chicago Style (17th ed.) Citation

Knoeppel, C. E. Installing Efficiency Methods. New York: The Engineering Magazine, 1915.

MLA (9th ed.) Citation

Knoeppel, C. E. Installing Efficiency Methods. The Engineering Magazine, 1915.