APA (7th ed.) Citation

Williams, A. S. (1974). Late-glacial--postglacial vegetational history of the Pretty Lake region, northeastern Indiana. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Williams, Alice Simms. Late-glacial--postglacial Vegetational History of the Pretty Lake Region, Northeastern Indiana. Washington: United States Department of the Interior, Geological Survey, 1974.

MLA (9th ed.) Citation

Williams, Alice Simms. Late-glacial--postglacial Vegetational History of the Pretty Lake Region, Northeastern Indiana. United States Department of the Interior, Geological Survey, 1974.