एपीए उद्धरण

Free, R. C. (2010). 21st century economics: A reference handbook. Sage.

शिकागो स्टाइल उद्धरण

Free, Rhona C. 21st Century Economics: A Reference Handbook. Los Angeles: Sage, 2010.

एमएलए उद्धरण

Free, Rhona C. 21st Century Economics: A Reference Handbook. Sage, 2010.