Gupta, S. P. Business statistics / S. P. Gupta, M. P. Gupta. - 15th ed. - New Delhi : S. Chand, 2008. - xii, 695 p. : ill. ; 21 cm. ISBN: 8180546419 Subjects--Topical Terms: Business Mathematics--Statistics Dewey Class. No.: 519.5 / GUB