APA (7th ed.) Citation

Crowley, T., Crowley, T. J., & Frede, M. (2009). Aristotle on the matter of the elements.

Chicago Style (17th ed.) Citation

Crowley, T., Timothy J. Crowley, and M. Frede. Aristotle on the Matter of the Elements. 2009.

MLA (9th ed.) Citation

Crowley, T., et al. Aristotle on the Matter of the Elements. 2009.