Cita APA (7a ed.)

Chicago Recreation Comission and Northwestern University (Chicago). (1940). Chicago recreation survey. Department of Sociology, Nortwestern University.

Cita Chicago Style (17a ed.)

Chicago Recreation Comission and Northwestern University (Chicago). Chicago Recreation Survey. Chicago: Department of Sociology, Nortwestern University, 1940.

Cita MLA (9a ed.)

Chicago Recreation Comission and Northwestern University (Chicago). Chicago Recreation Survey. Department of Sociology, Nortwestern University, 1940.