Cita APA

Hopkins, E. S., & Bean, E. L. (1975). Water purification control R. E. Krieger Pub. Co..

Citación estilo Chicago

Hopkins, Edward Scott, and Elwood L. Bean. Water Purification Control. 4th ed. Huntington, N.Y.: R. E. Krieger Pub. Co., 1975.

Cita MLA

Hopkins, Edward Scott, and Elwood L. Bean. Water Purification Control. 4th ed. Huntington, N.Y.: R. E. Krieger Pub. Co., 1975.