APA استشهاد

Gupta, C. B. G. (2004). An introduction to statistical methods (23rd rev.ed.). Vikas Publishing.

استشهاد بنمط شيكاغو

Gupta, C B Gupta. An Introduction to Statistical Methods. 23rd rev.ed. N.Delhi: Vikas Publishing, 2004.

MLA استشهاد

Gupta, C B Gupta. An Introduction to Statistical Methods. 23rd rev.ed. Vikas Publishing, 2004.