American Public Health Association, American Water Works Association, & Water Environment Federation. (2017). Standard methods for the examination of water and wastewater (23rd edition.). American Public Health Association.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAmerican Public Health Association, American Water Works Association, এবং Water Environment Federation. Standard Methods for the Examination of Water and Wastewater. 23rd edition. Washington, D.C: American Public Health Association, 2017.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিAmerican Public Health Association, et al. Standard Methods for the Examination of Water and Wastewater. 23rd edition. American Public Health Association, 2017.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.