APA (7th ed.) Citation

Maryland Geological Survey. (1913). Middle and Upper Devonian: Text. The Johns Hopkins press.

Chicago Style (17th ed.) Citation

Maryland Geological Survey. Middle and Upper Devonian: Text. Baltimore: The Johns Hopkins press, 1913.

MLA (8th ed.) Citation

Maryland Geological Survey. Middle and Upper Devonian: Text. The Johns Hopkins press, 1913.

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