APA (7th ed.) Citation

Wundt, W. M., Titchener, E. B., Gulliver, J. H., & Washburn, M. F. (1914). Ethics: An investigation of the facts & laws of the moral life. Allen.

Chicago Style (17th ed.) Citation

Wundt, Wilhelm Max, Edward Bradford Titchener, J. H. Gulliver, and M. F. Washburn. Ethics: An Investigation of the Facts & Laws of the Moral Life. London: Allen, 1914.

MLA (9th ed.) Citation

Wundt, Wilhelm Max, et al. Ethics: An Investigation of the Facts & Laws of the Moral Life. Allen, 1914.