Water and Wastewater Design and Research, C. E. (1998). How is Sewage Treated? (Activated Sludge 4). Journal of Water and Wastewater; Ab va Fazilab ( in persian ), 9(1), 57-62. doi: 10.22093/wwj.1998.174272
MLA
Consultant Engineers Water and Wastewater Design and Research. "How is Sewage Treated? (Activated Sludge 4)". Journal of Water and Wastewater; Ab va Fazilab ( in persian ), 9, 1, 1998, 57-62. doi: 10.22093/wwj.1998.174272
HARVARD
Water and Wastewater Design and Research, C. E. (1998). 'How is Sewage Treated? (Activated Sludge 4)', Journal of Water and Wastewater; Ab va Fazilab ( in persian ), 9(1), pp. 57-62. doi: 10.22093/wwj.1998.174272
VANCOUVER
Water and Wastewater Design and Research, C. E. How is Sewage Treated? (Activated Sludge 4). Journal of Water and Wastewater; Ab va Fazilab ( in persian ), 1998; 9(1): 57-62. doi: 10.22093/wwj.1998.174272