Wheldon, H. (1962). Wheldon's costing simplified.: Completely revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans.
Chicago-viite (17. p.)Wheldon, H.J. Wheldon's Costing Simplified.: Completely Revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans, 1962.
MLA-viite (9. p.)Wheldon, H.J. Wheldon's Costing Simplified.: Completely Revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans, 1962.
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