APA (7th ed.) Citation

Mejias, D. B. (1940). A study of the Dunbar sewage filter. [publisher not identified].

Chicago Style (17th ed.) Citation

Mejias, Diego Bautista. A Study of the Dunbar Sewage Filter. (College Station, Texas): [publisher not identified], 1940.

MLA (9th ed.) Citation

Mejias, Diego Bautista. A Study of the Dunbar Sewage Filter. [publisher not identified], 1940.