APA (7th ed.) Citation

Maryland Geological Survey, Clark, W. B., Goldman, M. I., Berry, E. W., Gardner, J. A., Pilsbry, H. A., . . . Stephenson, L. W. (1916). Upper Cretaceous .. The Johns Hopkins press.

Chicago Style (17th ed.) Citation

Maryland Geological Survey, William Bullock Clark, Marcus I. Goldman, Edward Wilber Berry, Julia Anna Gardner, Henry Augustus Pilsbry, Ray S. Bassler, and Lloyd William Stephenson. Upper Cretaceous .. Baltimore: The Johns Hopkins press, 1916.

MLA (8th ed.) Citation

Maryland Geological Survey, et al. Upper Cretaceous .. The Johns Hopkins press, 1916.