Gupta, S. C. (1988). Business Statistics. Himalaya.
Cita Chicago (17th ed.)Gupta, S. C. Business Statistics. Mumbai: Himalaya, 1988.
Cita MLA (9th ed.)Gupta, S. C. Business Statistics. Himalaya, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.