Owler, L., & Brown, J. (1975). Wheldon's cost accounting and costing methods/14e (14th ed.). The English Language Book Society and Macdonald and Evans.

Owler, L.W.J, and J.L Brown. Wheldon's Cost Accounting and Costing Methods/14e. 14th ed. London: The English Language Book Society and Macdonald and Evans, 1975.

Owler, L.W.J, and J.L Brown. Wheldon's Cost Accounting and Costing Methods/14e. 14th ed. The English Language Book Society and Macdonald and Evans, 1975.