APA aipamena

Gwartney, J. D., Sobel, R. S., Leeson, P. T., & Lawson, R. (2007). Economic freedom of the world: 2007 annual report (Philippine edition.). Economic Freedom Network.

Chicago Style aipamena

Gwartney, James D., Russell S. Sobel, Peter T. Leeson, and Robert Lawson. Economic Freedom of the World: 2007 Annual Report. Philippine edition. [Vancouver, B.C.]: Economic Freedom Network, 2007.

MLA aipamena

Gwartney, James D., et al. Economic Freedom of the World: 2007 Annual Report. Philippine edition. Economic Freedom Network, 2007.