APA (7th ed.) Citation

Fengler, M. R., Härdle, W., & Villa, C. (2001). The dynamics of implied volatilities: A common principle components approach.

Chicago Style (17th ed.) Citation

Fengler, Matthias R., Wolfgang Härdle, and Christophe Villa. The Dynamics of Implied Volatilities: A Common Principle Components Approach. Berlin, 2001.

MLA (9th ed.) Citation

Fengler, Matthias R., et al. The Dynamics of Implied Volatilities: A Common Principle Components Approach. 2001.