Behrens, W. W., & Hawranek, P. M. (1991). Manual for the preparation of industrial feasibility studies. United Nations Industrial Development Organization.
Citace podle Chicago (17th ed.)Behrens, William W., a P. M. Hawranek. Manual for the Preparation of Industrial Feasibility Studies. Viena: United Nations Industrial Development Organization, 1991.
Citace podle MLA (9th ed.)Behrens, William W., a P. M. Hawranek. Manual for the Preparation of Industrial Feasibility Studies. United Nations Industrial Development Organization, 1991.
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