Cita APA

Ehlers, V. M. (1937). Municipal and rural sanitation. (2¦ ed.). New York: McGraw-Hill Book Company.

Citación estilo Chicago

Ehlers, Victor M. Municipal and Rural Sanitation. 2¦ ed. New York: McGraw-Hill Book Company, 1937.

Cita MLA

Ehlers, Victor M. Municipal and Rural Sanitation. 2¦ ed. New York: McGraw-Hill Book Company, 1937.