WEBSTER, E. (1967). How To Win The Business Batle. Pinguin Books.
Lua i Stíl Chicago (17ú heag.)WEBSTER, Eric. How To Win The Business Batle. Pinguin Books, 1967.
Lua MLA (8ú heag.)WEBSTER, Eric. How To Win The Business Batle. Pinguin Books, 1967.
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