APA (7th ed.) Citation

Watson, H. B. (1937). Modern Theories of organic chemistry. At the clarendon Press.

Chicago Style (17th ed.) Citation

Watson, H. B. Modern Theories of Organic Chemistry. Oxford: At the clarendon Press, 1937.

MLA (8th ed.) Citation

Watson, H. B. Modern Theories of Organic Chemistry. At the clarendon Press, 1937.