APA (7th ed.) Citation

Gray, J. E. (2003). Geologic studies of mercury by the U.S. Geological Survey. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gray, John E. Geologic Studies of Mercury by the U.S. Geological Survey. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2003.

MLA (9th ed.) Citation

Gray, John E. Geologic Studies of Mercury by the U.S. Geological Survey. U.S. Department of the Interior, U.S. Geological Survey, 2003.