APA (7th ed.) Citation

Ashby, W. L. (1995). Fossils of Calvert Cliffs (3. ed.). Calvert Marine Museum.

Chicago Style (17th ed.) Citation

Ashby, Wallace L. Fossils of Calvert Cliffs. 3. ed. Solomons, Md: Calvert Marine Museum, 1995.

MLA (9th ed.) Citation

Ashby, Wallace L. Fossils of Calvert Cliffs. 3. ed. Calvert Marine Museum, 1995.