APA (7th ed.) Citation

Foster, J. W., & Whitney, J. D. (1851). Geological map of the Lake Superior land district in the state of Michigan. J. Ackerman, lithr.

Chicago Style (17th ed.) Citation

Foster, J. W., and J. D. Whitney. Geological Map of the Lake Superior Land District in the State of Michigan. [New York]: J. Ackerman, lithr, 1851.

MLA (9th ed.) Citation

Foster, J. W., and J. D. Whitney. Geological Map of the Lake Superior Land District in the State of Michigan. J. Ackerman, lithr, 1851.