Chisholm, M. (1973). Geography and economics (2nd ed.). Bell.
Cita Chicago (17th ed.)Chisholm, Michael. Geography and Economics. 2nd ed. London: Bell, 1973.
Cita MLA (9th ed.)Chisholm, Michael. Geography and Economics. 2nd ed. Bell, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.