Παραπομπή APA

Viessman, W., Hammer, M. J., & Hammer, M. J. (1992). Water supply and pollution control (5th ed.). New York: Harper Collins.

Παραπομπή Chicago Style

Viessman, Warren, Mark J. Hammer, and Mark J. Hammer. Water Supply and Pollution Control. 5th ed. New York: Harper Collins, 1992.

Παραπομπή MLA

Viessman, Warren, Mark J. Hammer, and Mark J. Hammer. Water Supply and Pollution Control. 5th ed. New York: Harper Collins, 1992.

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