APA
Hampel F., Stahel W., Rousseeuw P. & Ronchetti E. (1986). Robust Statistics : The Approach Based On Influence Function. : John Wiley & Sons.
Chicago
Hampel F.R, Stahel W.A, Rousseeuw P.J and Ronchetti E.M. 1986. Robust Statistics : The Approach Based On Influence Function. : John Wiley & Sons.
Harvard
Hampel F., Stahel W., Rousseeuw P. and Ronchetti E. (1986). Robust Statistics : The Approach Based On Influence Function. : John Wiley & Sons.
MLA
Hampel F.R, Stahel W.A, Rousseeuw P.J and Ronchetti E.M. Robust Statistics : The Approach Based On Influence Function. : John Wiley & Sons. 1986.