Lua APA (7ú heag.)

CRAWFORD, C. (1991). New products management.-- ed.3. Irwin.

Lua i Stíl Chicago (17ú heag.)

CRAWFORD, C.Merle. New Products Management.-- Ed.3. Homewood: Irwin, 1991.

Lua MLA (9ú heag.)

CRAWFORD, C.Merle. New Products Management.-- Ed.3. Irwin, 1991.

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