Gupta, J. (1987). Mathematics For Business And Economics J.d Gupta; P.k Gupta And Man Mohan. McGraw-Hill.
Chicago-viite (17. p.)Gupta, J.D. Mathematics For Business And Economics J.d Gupta; P.k Gupta And Man Mohan. McGraw-Hill, 1987.
MLA-viite (8. p.)Gupta, J.D. Mathematics For Business And Economics J.d Gupta; P.k Gupta And Man Mohan. McGraw-Hill, 1987.
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