APA (7th ed.) Citation

Yao, D., Zhang, S., & Zhou, X. (2006). Tracking a financial benchmark using a few assets.

Chicago Style (17th ed.) Citation

Yao, D., S. Zhang, and X. Zhou. Tracking a Financial Benchmark Using a Few Assets. 2006.

MLA (9th ed.) Citation

Yao, D., et al. Tracking a Financial Benchmark Using a Few Assets. 2006.