Cita APA (7a ed.)

Blacksell, M., & Williams, A. M. (1994). The European challenge: Geography and development in the European Community. Oxford University Press.

Cita Chicago Style (17a ed.)

Blacksell, Mark, y Allan M. Williams. The European Challenge: Geography and Development in the European Community. Oxford: Oxford University Press, 1994.

Cita MLA (8a ed.)

Blacksell, Mark, y Allan M. Williams. The European Challenge: Geography and Development in the European Community. Oxford University Press, 1994.