Chisholm, M. (1973). Geography and economics (2nd ed.). Bell.
Lua i Stíl Chicago (17ú heag.)Chisholm, Michael. Geography and Economics. 2nd ed. London: Bell, 1973.
Lua MLA (9ú heag.)Chisholm, Michael. Geography and Economics. 2nd ed. Bell, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.