Cita APA

Clark, J. (1971). Water supply and pollution control (2a. ed.). Sacranton, Pennsylvania: [s.n.].

Citación estilo Chicago

Clark, John. Water Supply and Pollution Control. 2a. ed. Sacranton, Pennsylvania: [s.n.], 1971.

Cita MLA

Clark, John. Water Supply and Pollution Control. 2a. ed. Sacranton, Pennsylvania: [s.n.], 1971.