Sheperd, W. G. (1979). Public policies toward business (6ª ed.). Richard D. Irwin.
Chicago-čujuhus (17. p.)Sheperd, William G. Public Policies Toward Business. 6ª ed. Richard D. Irwin, 1979.
MLA-čujuhus (9. p.)Sheperd, William G. Public Policies Toward Business. 6ª ed. Richard D. Irwin, 1979.
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