APPLEBY,Robert C. (1972). Modern Business Adminstration Robert C. Appleby. Pitman Paperbacks.
Lua i Stíl Chicago (17ú heag.)APPLEBY,Robert C. Modern Business Adminstration Robert C. Appleby. Pitman Paperbacks, 1972.
Lua MLA (8ú heag.)APPLEBY,Robert C. Modern Business Adminstration Robert C. Appleby. Pitman Paperbacks, 1972.
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