APA aipamena

Gwartney, J. D. (2010). Economic freedom of the world, 2009 annual report. Fraser Institute.

Chicago Style aipamena

Gwartney, James D. Economic Freedom of the World, 2009 Annual Report. [Vancouver, B.C.]: Fraser Institute, 2010.

MLA aipamena

Gwartney, James D. Economic Freedom of the World, 2009 Annual Report. Fraser Institute, 2010.