Cita APA (7th ed.)

HILL, R. (1997). Undergraduate economics. John Wiley and Sons.

Cita Chicago (17th ed.)

HILL, R.Carter. Undergraduate Economics. New York: John Wiley and Sons, 1997.

Cita MLA (9th ed.)

HILL, R.Carter. Undergraduate Economics. John Wiley and Sons, 1997.