Cita APA (7a ed.)

Cullingworth, J. B., & Orr, S. C. (1969). Regional and urban studies: A social science approach. George Allen & Unwin.

Cita Chicago Style (17a ed.)

Cullingworth, J. B., y S. C. Orr. Regional and Urban Studies: A Social Science Approach. London: George Allen & Unwin, 1969.

Cita MLA (9a ed.)

Cullingworth, J. B., y S. C. Orr. Regional and Urban Studies: A Social Science Approach. George Allen & Unwin, 1969.