Gupta, S. P. (1996). Business statistics (1st edition.). S Chand.
Čikaški stil citiranja (17. izdanje)Gupta, S P. Business Statistics. 1st edition. New Delhi: S Chand, 1996.
MLA način citiranja (9. izdanje)Gupta, S P. Business Statistics. 1st edition. S Chand, 1996.
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