APA (7th ed.) Citation

Ferson, W. E., & Siegel, A. F. (2006). Testing portfolio efficiency with conditioning information. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Ferson, Wayne E., and Andrew F. Siegel. Testing Portfolio Efficiency with Conditioning Information. Cambridge, Mass: National Bureau of Economic Research, 2006.

MLA (9th ed.) Citation

Ferson, Wayne E., and Andrew F. Siegel. Testing Portfolio Efficiency with Conditioning Information. National Bureau of Economic Research, 2006.