KHANNA B S. (1985). PRATICAL COSTING (3RD.). SULTAN CHAND AND SONS.
Chicago-čujuhus (17. p.)KHANNA B S. PRATICAL COSTING. 3RD. NEW DELHI: SULTAN CHAND AND SONS, 1985.
MLA-čujuhus (9. p.)KHANNA B S. PRATICAL COSTING. 3RD. SULTAN CHAND AND SONS, 1985.
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