Gaya APA

HAMMER, M, J, H, A, M, J. (2008). WATER DAN WASTEWATER TECHNOLOGY . UNITED STATES OF AMERICA: PEARSON EDUCATIONAL INTERNATIONAL.

Gaya MLA

HAMMER, MARK, J., HAMMER, AND, MARK, J.. "WATER DAN WASTEWATER TECHNOLOGY". UNITED STATES OF AMERICA: PEARSON EDUCATIONAL INTERNATIONAL, 2008. Text.