Παραπομπή APA

Pontius, F. W. (1990). Water quality and treatment: A handbook of community water supplies (4th ed.). New York: McGraw-Hill.

Παραπομπή Chicago Style

Pontius, Frederick W. Water Quality and Treatment: A Handbook of Community Water Supplies. 4th ed. New York: McGraw-Hill, 1990.

Παραπομπή MLA

Pontius, Frederick W. Water Quality and Treatment: A Handbook of Community Water Supplies. 4th ed. New York: McGraw-Hill, 1990.

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