Westwood, J. (1997). 30 minutes ... to write a marketing plan. Kogan page.
Lua i Stíl Chicago (17ú heag.)Westwood, John. 30 Minutes ... to Write a Marketing Plan. New Delhi: Kogan page, 1997.
Lua MLA (8ú heag.)Westwood, John. 30 Minutes ... to Write a Marketing Plan. Kogan page, 1997.
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