Feig, B. (1993). The new products workshop: Hands-on tools for developing winners. McGraw-Hill.
Chicago-viite (17. p.)Feig, Barry. The New Products Workshop: Hands-on Tools for Developing Winners. New York: McGraw-Hill, 1993.
MLA-viite (9. p.)Feig, Barry. The New Products Workshop: Hands-on Tools for Developing Winners. McGraw-Hill, 1993.
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