Stafford, L. (1974). Business Mathematics. E.L.B.S & Macdonald & Evans Ltd.
Chicago-čujuhus (17. p.)Stafford, L. Business Mathematics. London: E.L.B.S & Macdonald & Evans Ltd, 1974.
MLA-čujuhus (9. p.)Stafford, L. Business Mathematics. E.L.B.S & Macdonald & Evans Ltd, 1974.
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