Barringer, B. R. (2015). Preparing Effective Business Plans Edisi 2. Pearson.
Lua i Stíl Chicago (17ú heag.)Barringer, Bruce R. Preparing Effective Business Plans Edisi 2. Pearson, 2015.
Lua MLA (8ú heag.)Barringer, Bruce R. Preparing Effective Business Plans Edisi 2. Pearson, 2015.
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