Cita APA (7th ed.)
Viessman, W., & Hammer, M. J. (1998). Water supply and pollution control (6th ed.). Addison Wesley.
Cita Chicago (17th ed.)
Viessman, Warren, i Mark J. Hammer. Water Supply and Pollution Control. 6th ed. Menlo Park, CA: Addison Wesley, 1998.
Cita MLA (9th ed.)
Viessman, Warren, i Mark J. Hammer. Water Supply and Pollution Control. 6th ed. Addison Wesley, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.