Kotler, P., & Keller, K. L. (2006). Marketing management (Twelfth ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Kotler, Philip, agus Kevin Lane Keller. Marketing Management. Twelfth ed. Upper Saddle River, N.J. ; New Delhi: Prentice Hall, 2006.
Lua MLA (8ú heag.)Kotler, Philip, agus Kevin Lane Keller. Marketing Management. Twelfth ed. Prentice Hall, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.