APA aipamena

Gupta, S. (2002). Statistical methods. S.Chand & Sons.

Chicago Style aipamena

Gupta, S.P. Statistical Methods. New Delhi: S.Chand & Sons, 2002.

MLA aipamena

Gupta, S.P. Statistical Methods. S.Chand & Sons, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.