414257 Hammer, M. J., & Hammer, M. J. 4. (2005). Water and wastewater technology. Singapore: Prentice Hall.
Cita Chicago (17th ed.)414257 Hammer, Mark J., i Mark J 414257 Hammer. Water and Wastewater Technology. Singapore: Prentice Hall, 2005.
Cita MLA (9th ed.)414257 Hammer, Mark J., i Mark J 414257 Hammer. Water and Wastewater Technology. Singapore: Prentice Hall, 2005.
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