APA (7th ed.) Citation

Soper, G. A. (1909). Modern methods of street cleaning. Engineering News Publishing Company.

Chicago Style (17th ed.) Citation

Soper, George A. Modern Methods of Street Cleaning. New York: Engineering News Publishing Company, 1909.

MLA (9th ed.) Citation

Soper, George A. Modern Methods of Street Cleaning. Engineering News Publishing Company, 1909.