Härdle, W. (1991). Smoothing techniques: With implementation in S (1. print.). Springer.
Chicago Style (17th ed.) CitationHärdle, Wolfgang. Smoothing Techniques: With Implementation in S. 1. print. New York [u.a.]: Springer, 1991.
MLA (9th ed.) CitationHärdle, Wolfgang. Smoothing Techniques: With Implementation in S. 1. print. Springer, 1991.
Warning: These citations may not always be 100% accurate.