Chisholm, M. (1973). Geography and economics (2nd ed.). Bell.
Chicago Style aipamenaChisholm, Michael. Geography and Economics. 2nd ed. London: Bell, 1973.
MLA aipamenaChisholm, Michael. Geography and Economics. 2nd ed. Bell, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.