KHANNA B S. (1985). PRATICAL COSTING (3RD.). SULTAN CHAND AND SONS.
Cita Chicago (17th ed.)KHANNA B S. PRATICAL COSTING. 3RD. NEW DELHI: SULTAN CHAND AND SONS, 1985.
Cita MLA (9th ed.)KHANNA B S. PRATICAL COSTING. 3RD. SULTAN CHAND AND SONS, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.