APA (7th ed.) Citation

Nichols, W. J., Lobao, J. J., & Sowles, J. W. (1984). Phosphorus loading to McGrath and Ellis ponds, Kennebec County, Maine. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Nichols, William J., Jeffrey J. Lobao, and John W. Sowles. Phosphorus Loading to McGrath and Ellis Ponds, Kennebec County, Maine. Augusta, Maine: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Nichols, William J., et al. Phosphorus Loading to McGrath and Ellis Ponds, Kennebec County, Maine. U.S. Geological Survey, 1984.