Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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