Gaya APA
Greenberg, A, E. (1992).
Standard Methodes For Examination of Water & Wastewater Ed. 18 (18th edition).
Washington D.C.:
American Public Health Association.
Gaya MLA
Greenberg, Arnold, E..
"Standard Methodes For Examination of Water & Wastewater Ed. 18".
18th edition
Washington D.C.:
American Public Health Association,
1992.
Koleksi Cetak.