Hay, I. (1996). Communicating in geography and the environmental sciences. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hay, Iain. Communicating in Geography and the Environmental Sciences. Melbourne: Oxford University Press, 1996.
Lua MLA (9ú heag.)Hay, Iain. Communicating in Geography and the Environmental Sciences. Oxford University Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.