Friesz, P. J., & Colman, J. A. (2001). Hydrology and trophic ecology of Walden Pond, Concord, Massachusetts. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationFriesz, Paul J., and John A. Colman. Hydrology and Trophic Ecology of Walden Pond, Concord, Massachusetts. Reston, VA: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.
MLA (9th ed.) CitationFriesz, Paul J., and John A. Colman. Hydrology and Trophic Ecology of Walden Pond, Concord, Massachusetts. U.S. Dept. of the Interior, U.S. Geological Survey, 2001.
Warning: These citations may not always be 100% accurate.