APA (7th ed.) Citation

Não informado. (1969). Area. Institute of British Geographers.

Chicago Style (17th ed.) Citation

Não informado. Area. London: Institute of British Geographers, 1969.

MLA (8th ed.) Citation

Não informado. Area. Institute of British Geographers, 1969.

Warning: These citations may not always be 100% accurate.