Cita APA (7a ed.)

Royal Geographical Society & Institute of British Geographers. (1969). Area. J. Wiley.

Cita Chicago Style (17a ed.)

Royal Geographical Society y Institute of British Geographers. Area. Oxford: J. Wiley, 1969.

Cita MLA (8a ed.)

Royal Geographical Society y Institute of British Geographers. Area. J. Wiley, 1969.