Παραπομπή APA

Gupta C B. (1957). Introduction to statistical methods. Vikas publishsing house.

Παραπομπή Chicago Style

Gupta C B. Introduction to Statistical Methods. New Delhi: Vikas publishsing house, 1957.

Παραπομπή MLA

Gupta C B. Introduction to Statistical Methods. Vikas publishsing house, 1957.