APA (7th ed.) Citation

Steel, E. W., & Zeller, P. J. A. (1928). The Dunbar sewage filter. Agricultural and Mechanical College of Texas.

Chicago Style (17th ed.) Citation

Steel, E. W., and P. J. A. Zeller. The Dunbar Sewage Filter. [College Station, Tex.]: Agricultural and Mechanical College of Texas, 1928.

MLA (9th ed.) Citation

Steel, E. W., and P. J. A. Zeller. The Dunbar Sewage Filter. Agricultural and Mechanical College of Texas, 1928.