APA (7th ed.) Citation

United States. Bureau of Soils, Wilder, H., & Geib, W. J. (1903). Soil map, Michigan, Pontiac sheet. Field Operations, Bureau of Soils.

Chicago Style (17th ed.) Citation

United States. Bureau of Soils, H.J Wilder, and W. J. Geib. Soil Map, Michigan, Pontiac Sheet. [Washington, D.C.]: Field Operations, Bureau of Soils, 1903.

MLA (9th ed.) Citation

United States. Bureau of Soils, et al. Soil Map, Michigan, Pontiac Sheet. Field Operations, Bureau of Soils, 1903.