Johnston R J & Sidaway J D. (2004). Geography and geographers: Anglo-american human geohraphy since 1945 (6.). Arnold.
Chicago Style aipamenaJohnston R J and Sidaway J D. Geography and Geographers: Anglo-american Human Geohraphy Since 1945. 6. London: Arnold, 2004.
MLA aipamenaJohnston R J and Sidaway J D. Geography and Geographers: Anglo-american Human Geohraphy Since 1945. 6. Arnold, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.