Cita APA (7a ed.)

Abrams, C. (1965). The city is the frontier. Harper and Ro.

Cita Chicago Style (17a ed.)

Abrams, Charles. The City Is the Frontier. New York: Harper and Ro, 1965.

Cita MLA (9a ed.)

Abrams, Charles. The City Is the Frontier. Harper and Ro, 1965.