Cita APA (7a ed.)

Park, R. E. (1952). Human communities: The city and human ecology. Free Press.

Cita Chicago Style (17a ed.)

Park, Robert Ezra. Human Communities: The City and Human Ecology. Glencoe, Illinois: Free Press, 1952.

Cita MLA (9a ed.)

Park, Robert Ezra. Human Communities: The City and Human Ecology. Free Press, 1952.