APA-referens (7:e uppl.)

Gupta, S. P. (2017). Statistical Methods (45th rev. ed.). Sultan Chand & Sons.

Chicago-referens (17:e uppl.)

Gupta, S. P. Statistical Methods. 45th rev. ed. New Delhi: Sultan Chand & Sons, 2017.

MLA-referens (9:e uppl.)

Gupta, S. P. Statistical Methods. 45th rev. ed. Sultan Chand & Sons, 2017.