APA (7th ed.) Citation

Long, J. H., & DenBoer, G. (1994). Atlas of historical county boundaries. Simon & Schuster.

Chicago Style (17th ed.) Citation

Long, John Hamilton, and Gordon DenBoer. Atlas of Historical County Boundaries. New York: Simon & Schuster, 1994.

MLA (9th ed.) Citation

Long, John Hamilton, and Gordon DenBoer. Atlas of Historical County Boundaries. Simon & Schuster, 1994.

Warning: These citations may not always be 100% accurate.