Παραπομπή APA

Gupta, S. (2006). Statistical methods (34th ed.). Sultan Chand & Sons.

Παραπομπή Chicago Style

Gupta, S.P. Statistical Methods. 34th ed. New Delhi: Sultan Chand & Sons, 2006.

Παραπομπή MLA

Gupta, S.P. Statistical Methods. 34th ed. Sultan Chand & Sons, 2006.