American Public Health Association, Water Pollution Control Federation (U.S.), & American Water Works Association. (1965). Standard methods for the examination of water and wastewater: Including bottom sediment and sludges (12th ed.). American Public Health Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAmerican Public Health Association, Water Pollution Control Federation (U.S.), এবং American Water Works Association. Standard Methods for the Examination of Water and Wastewater: Including Bottom Sediment and Sludges. 12th ed. New York: American Public Health Association, 1965.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিAmerican Public Health Association, et al. Standard Methods for the Examination of Water and Wastewater: Including Bottom Sediment and Sludges. 12th ed. American Public Health Association, 1965.