Παραπομπή APA

Gupta, C. B., & Ratna, V. (1973). Statistical calculations (3rd ed.). Vikas Publishing House Pvt. Ltd.

Παραπομπή Chicago Style

Gupta, C. B., και V. Ratna. Statistical Calculations. 3rd ed. New Delhi: Vikas Publishing House Pvt. Ltd, 1973.

Παραπομπή MLA

Gupta, C. B., και V. Ratna. Statistical Calculations. 3rd ed. Vikas Publishing House Pvt. Ltd, 1973.