Dyfyniad APA

Hammer, M. J. (2020). Water and Wastewater technology (6th.). Pearson.

Dyfyniad Arddull Chicago

Hammer, Mark J. Water and Wastewater Technology. 6th. New Delhi: Pearson, 2020.

Dyfyniad MLA

Hammer, Mark J. Water and Wastewater Technology. 6th. Pearson, 2020.

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