Walker, F. R. (1952). Practical accounting and cost keeping for contractors; a treatise on modern business methods. F. R. Walker Co.
Citace podle Chicago (17th ed.)Walker, Frank Rabold. Practical Accounting and Cost Keeping for Contractors; a Treatise on Modern Business Methods. Chicago: F. R. Walker Co, 1952.
Citace podle MLA (9th ed.)Walker, Frank Rabold. Practical Accounting and Cost Keeping for Contractors; a Treatise on Modern Business Methods. F. R. Walker Co, 1952.
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