Gupta, S. (2005). Business statstics. Himalaya Publishing House.
Cita Chicago (17th ed.)Gupta, S. Business Statstics. Mumbai: Himalaya Publishing House, 2005.
Cita MLA (9th ed.)Gupta, S. Business Statstics. Himalaya Publishing House, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.