Wheldon, H. (1962). Wheldon's costing simplified.: Completely revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans.
Cita Chicago (17th ed.)Wheldon, H.J. Wheldon's Costing Simplified.: Completely Revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans, 1962.
Cita MLA (9th ed.)Wheldon, H.J. Wheldon's Costing Simplified.: Completely Revised by L.W.J.Owler and J.L.Brown. Mackdonald & Evans, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.