APA (7th ed.) Citation

Maryland Geological Survey & Clark, W. B. (1913). Lower Devonian, text. The Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Maryland Geological Survey and William Bullock Clark. Lower Devonian, Text. Baltimore: The Johns Hopkins Press, 1913.

MLA (8th ed.) Citation

Maryland Geological Survey and William Bullock Clark. Lower Devonian, Text. The Johns Hopkins Press, 1913.