Παραπομπή APA

Viessman, W., & Viessman, W. H. (1999). Water supply and pollution control/6th ed (6th ed.). Addison Wesley.

Παραπομπή Chicago Style

Viessman, Warren, και Warren Hammer Viessman. Water Supply and Pollution Control/6th Ed. 6th ed. California: Addison Wesley, 1999.

Παραπομπή MLA

Viessman, Warren, και Warren Hammer Viessman. Water Supply and Pollution Control/6th Ed. 6th ed. Addison Wesley, 1999.