Cita APA (7th ed.)

(1967). Beyond the frontier: Social process and cultural change. The Natural History Pr.

Cita Chicago (17th ed.)

Beyond the Frontier: Social Process and Cultural Change. New York: The Natural History Pr, 1967.

Cita MLA (9th ed.)

Beyond the Frontier: Social Process and Cultural Change. The Natural History Pr, 1967.