Matthews, J. A., & Herbert, D. T. (2008). Geography: A very short introduction. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Matthews, John A., agus David T. Herbert. Geography: A Very Short Introduction. Oxford ; New York: Oxford University Press, 2008.
Lua MLA (9ú heag.)Matthews, John A., agus David T. Herbert. Geography: A Very Short Introduction. Oxford University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.