एपीए उद्धरण

Gregory, P. R. (2005). Essentials of economics. Boston, MA: Pearson Education.

शिकागो स्टाइल उद्धरण

Gregory, Paul R. Essentials of Economics. Boston, MA: Pearson Education, 2005.

एमएलए उद्धरण

Gregory, Paul R. Essentials of Economics. Boston, MA: Pearson Education, 2005.