Cita APA (7th ed.)
Schiller, B. R. (2003). The economy today (9th ed.). McGraw-Hill/Irwin.
Cita Chicago (17th ed.)
Schiller, Bradley R. The Economy Today. 9th ed. Boston: McGraw-Hill/Irwin, 2003.
Cita MLA (9th ed.)
Schiller, Bradley R. The Economy Today. 9th ed. McGraw-Hill/Irwin, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.