Rawling, E., & Daugherty, R. (1996). Geography into the twenty-first century. Wiley.
Lua i Stíl Chicago (17ú heag.)Rawling, Eleanor, agus Richard Daugherty. Geography into the Twenty-first Century. Chichester, [Eng.]: Wiley, 1996.
Lua MLA (9ú heag.)Rawling, Eleanor, agus Richard Daugherty. Geography into the Twenty-first Century. Wiley, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.