Παραπομπή APA

Gupta,S.P. (2000). Statistical methods.- 29th rev.ed (29th rev.ed.). Sultan chand & sons.

Παραπομπή Chicago Style

Gupta,S.P. Statistical Methods.- 29th Rev.ed. 29th rev.ed. New Delhi: Sultan chand & sons, 2000.

Παραπομπή MLA

Gupta,S.P. Statistical Methods.- 29th Rev.ed. 29th rev.ed. Sultan chand & sons, 2000.