Rawling, E., & Daugherty, R. (1996). Geography into the twenty-first century. Wiley.
Dyfyniad Arddull ChicagoRawling, Eleanor, and Richard Daugherty. Geography into the Twenty-first Century. Chichester, [Eng.]: Wiley, 1996.
Dyfyniad MLARawling, Eleanor, and Richard Daugherty. Geography into the Twenty-first Century. Wiley, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.