CRAFORD, c. M. (1983). New Products Management C. Merle Crawford. Richard D Irwin.
Lua i Stíl Chicago (17ú heag.)CRAFORD, c. Merle. New Products Management C. Merle Crawford. Richard D Irwin, 1983.
Lua MLA (8ú heag.)CRAFORD, c. Merle. New Products Management C. Merle Crawford. Richard D Irwin, 1983.
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