Smith, P., Berry, C., & Pulford, A. (2002). Encyclopedia of strategic management: Marketing communications vol. 5. Crest Publishing House.
Lua i Stíl Chicago (17ú heag.)Smith, Paul, Chris Berry, agus Alan Pulford. Encyclopedia of Strategic Management: Marketing Communications Vol. 5. New Delhi: Crest Publishing House, 2002.
Lua MLA (8ú heag.)Smith, Paul, et al. Encyclopedia of Strategic Management: Marketing Communications Vol. 5. Crest Publishing House, 2002.
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