Παραπομπή APA

Gupta, S. P. (2008). Practical statistics. S.Chand.

Παραπομπή Chicago Style

Gupta, S P. Practical Statistics. N.Delhi: S.Chand, 2008.

Παραπομπή MLA

Gupta, S P. Practical Statistics. S.Chand, 2008.