APA aipamena

Leroy, A., & Rousseeuw, P. J. (1985). Progress: A program for robust regression analysis on the IBM PC. Delft University of Technology.

Chicago Style aipamena

Leroy, A., and Peter J. Rousseeuw. Progress: A Program for Robust Regression Analysis on the IBM PC. Delft: Delft University of Technology, 1985.

MLA aipamena

Leroy, A., and Peter J. Rousseeuw. Progress: A Program for Robust Regression Analysis on the IBM PC. Delft University of Technology, 1985.