एपीए उद्धरण

Guell, R. C. (2010). Issues in economics today. Boston: McGraw-Hill/Irwin.

शिकागो स्टाइल उद्धरण

Guell, Robert C. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.

एमएलए उद्धरण

Guell, Robert C. Issues in Economics Today. Boston: McGraw-Hill/Irwin, 2010.