APA استشهاد

Viertl, R. (2011). Statistical methods for fuzzy data. John Wiley & sons.

استشهاد بنمط شيكاغو

Viertl, Reinhard. Statistical Methods for Fuzzy Data. United Kingdom: John Wiley & sons, 2011.

MLA استشهاد

Viertl, Reinhard. Statistical Methods for Fuzzy Data. John Wiley & sons, 2011.