Cita APA

Guell, R. C., & Robert C. Guell. (2010). Issues in economics today. Boston: McGraw-Hill/Irwin.

Citación estilo Chicago

Guell, Robert C., y Robert C. Guell. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.

Cita MLA

Guell, Robert C., y Robert C. Guell. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.