Lua APA (7ú heag.)

HAMMER, M. J. (1996). Water and wastewater technology.-- ed.3. Prentice Hall.

Lua i Stíl Chicago (17ú heag.)

HAMMER, Mark J. Water and Wastewater Technology.-- Ed.3. New Jersey: Prentice Hall, 1996.

Lua MLA (9ú heag.)

HAMMER, Mark J. Water and Wastewater Technology.-- Ed.3. Prentice Hall, 1996.

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