Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.