BARRON ROBERT. (1984). OFFICIAL MBA HANDBOOK OF GREAT BUSINESS QUATATIONS. SIMON & SCHUSTER INC.
Lua i Stíl Chicago (17ú heag.)BARRON ROBERT. OFFICIAL MBA HANDBOOK OF GREAT BUSINESS QUATATIONS. NEW YORK: SIMON & SCHUSTER INC, 1984.
Lua MLA (9ú heag.)BARRON ROBERT. OFFICIAL MBA HANDBOOK OF GREAT BUSINESS QUATATIONS. SIMON & SCHUSTER INC, 1984.
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