MAY MATTHEW E. (2007). ELEGANT SOLUTION: TOYOTA`S FORMULA FOR MASTERING INNOVATION. SIMON & SCHUSTER.
Lua i Stíl Chicago (17ú heag.)MAY MATTHEW E. ELEGANT SOLUTION: TOYOTA`S FORMULA FOR MASTERING INNOVATION. LONDON: SIMON & SCHUSTER, 2007.
Lua MLA (9ú heag.)MAY MATTHEW E. ELEGANT SOLUTION: TOYOTA`S FORMULA FOR MASTERING INNOVATION. SIMON & SCHUSTER, 2007.
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