APA (7th ed.) Citation

Gray, G. W. (1937). The advancing front of science. Whittlesey house, McGraw-Hill book company, inc..

Chicago Style (17th ed.) Citation

Gray, George W. The Advancing Front of Science. New York, London: Whittlesey house, McGraw-Hill book company, inc., 1937.

MLA (9th ed.) Citation

Gray, George W. The Advancing Front of Science. Whittlesey house, McGraw-Hill book company, inc., 1937.