Cita APA (7a ed.)

HUBBARD,Glenn. (2008). Economics (2nd.). Prentiice HJall.

Cita Chicago Style (17a ed.)

HUBBARD,Glenn. Economics. 2nd. Uppersadle River: Prentiice HJall, 2008.

Cita MLA (9a ed.)

HUBBARD,Glenn. Economics. 2nd. Prentiice HJall, 2008.