At the crossroads :
Michilimackinac during the American Revolution /
by David A. Armour and Keith R. Widder.

APA Citation

Armour, D. A., Widder, K. R.. (1978). At the crossroads: Michilimackinac during the American Revolution. Mackinac Island, Mich.: Mackinac Island State Park Commission.

MLA Citation

Armour, David A, and Keith R. Widder. At the Crossroads: Michilimackinac During the American Revolution. Mackinac Island, Mich.: Mackinac Island State Park Commission, 1978.

Warning: These citations may not always be complete (especially for serials).