APA (7th ed.) Citation

Wirth, L. (1940). Contemporary social problems: A tentative formulation for teachers of social studies. The University of Chicago press.

Chicago Style (17th ed.) Citation

Wirth, Louis. Contemporary Social Problems: A Tentative Formulation for Teachers of Social Studies. Chicago, Ill.: The University of Chicago press, 1940.

MLA (9th ed.) Citation

Wirth, Louis. Contemporary Social Problems: A Tentative Formulation for Teachers of Social Studies. The University of Chicago press, 1940.