APA استشهاد

Gupta, S. (2008). Elementary statistical methods (17th.). Sultan Chand &Sons.

استشهاد بنمط شيكاغو

Gupta, S.P. Elementary Statistical Methods. 17th. New Delhi: Sultan Chand &Sons, 2008.

MLA استشهاد

Gupta, S.P. Elementary Statistical Methods. 17th. Sultan Chand &Sons, 2008.