APA (7th ed.) Citation

Higgins, M. W., & Conant, L. B. (1990). The geology of Cecil County, Maryland.

Chicago Style (17th ed.) Citation

Higgins, Michael William, and Louis B. Conant. The Geology of Cecil County, Maryland. Baltimore, Md, 1990.

MLA (9th ed.) Citation

Higgins, Michael William, and Louis B. Conant. The Geology of Cecil County, Maryland. 1990.

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