APA (7th ed.) Citation

Park, R. E., & Burgess, E. W. (1921). Introduction to the science of sociology. University of Chicago Press.

Chicago Style (17th ed.) Citation

Park, Robert Ezra, and Ernest Watson Burgess. Introduction to the Science of Sociology. Chicago, Ill: University of Chicago Press, 1921.

MLA (9th ed.) Citation

Park, Robert Ezra, and Ernest Watson Burgess. Introduction to the Science of Sociology. University of Chicago Press, 1921.