American Public Health Association, American Water Works Association, Water Pollution Control Federation, Aras, M. J., Greenberg, A. E., Hoak, R. D., & Rand, M. C. (1971). Standard methods for the examination of water and wastewater (Thirteenth edition.). American Public Health Association.
Chicago-Zitierstil (17. Ausg.)American Public Health Association, American Water Works Association, Water Pollution Control Federation, Michael J. Aras, Arnold E. Greenberg, Richard D. Hoak, und M. C. Rand. Standard Methods for the Examination of Water and Wastewater. Thirteenth edition. Washington, D.C: American Public Health Association, 1971.
MLA-Zitierstil (9. Ausg.)American Public Health Association, et al. Standard Methods for the Examination of Water and Wastewater. Thirteenth edition. American Public Health Association, 1971.