Gaya APA
Shahib, M, N., Association, A, P, H. (1985).
Standard Methods For The Examination Of Water And Wastewater (6th ed.).
Washington:
American Public Health Association.
Gaya MLA
Shahib, M., Nurhalim., Association, American, Public, Health.
"Standard Methods For The Examination Of Water And Wastewater".
6th ed.
Washington:
American Public Health Association,
1985.
Text.