APA (7th ed.) Citation

Rourke, R. V., & Hardesty, J. S. (1966). Soil association map of Maine. University of Maine at Orono.

Chicago Style (17th ed.) Citation

Rourke, R. V., and J. Stewart Hardesty. Soil Association Map of Maine. Orono, Me.: University of Maine at Orono, 1966.

MLA (9th ed.) Citation

Rourke, R. V., and J. Stewart Hardesty. Soil Association Map of Maine. University of Maine at Orono, 1966.