Chakravorti, S. R. (1997). Basic statistics. SAP.
Cita Chicago (17th ed.)Chakravorti, S. R. Basic Statistics. New Delhi: SAP, 1997.
Cita MLA (9th ed.)Chakravorti, S. R. Basic Statistics. SAP, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.