Gaya APA
JR, M, J, H., Hammer, M, J. (2005).
Water and Wastewater Technology fifth edition (Fifth Edition).
Singapore:
Pearson.
Gaya MLA
JR, Mark, J., Hammer., Hammer, Mark, J..
"Water and Wastewater Technology fifth edition".
Fifth Edition
Singapore:
Pearson,
2005.
Text.