APA (7th ed.) Citation

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.) Citation

Friesz, 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.) Citation

Friesz, 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.