APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Boardman-Free, Rhona C. 21st Century Economics: A Reference Handbook. Los Angeles [u.a.]: SAGE, 2010.

MLA (9th ed.) Citation

Boardman-Free, Rhona C. 21st Century Economics: A Reference Handbook. SAGE, 2010.