Guell, R. C., & Robert C. Guell. (2010). Issues in economics today. Boston: McGraw-Hill/Irwin.
Citación estilo ChicagoGuell, Robert C., y Robert C. Guell. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.
Cita MLAGuell, Robert C., y Robert C. Guell. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.
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