Kash., D. E. (1989). Perpetual innovation: The new world of competition. New York: Basic Books.
Chicago Style aipamenaKash., Don E. Perpetual Innovation: The New World of Competition. New York: Basic Books, 1989.
MLA aipamenaKash., Don E. Perpetual Innovation: The New World of Competition. New York: Basic Books, 1989.
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