Gupta,S P. (2007). Elementary statistical methods (17.). sultan chand&Sons.
Chicago Edition CitationGupta,S P. Elementary Statistical Methods. 17. New Delhi: sultan chand&Sons, 2007.
Cita MLAGupta,S P. Elementary Statistical Methods. 17. sultan chand&Sons, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.