APA aipamena

Guell, R. C. (2010). Issues in economics today (5th ed.). Boston: McGraw-Hill/Irwin.

Chicago Style aipamena

Guell, Robert C. Issues in Economics Today. 5th ed. Boston: McGraw-Hill/Irwin, 2010.

MLA aipamena

Guell, Robert C. Issues in Economics Today. 5th ed. Boston: McGraw-Hill/Irwin, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.