Armstrong, G. a., & Kotler, P. (2011). Marketing: An introduction. London : Pearson.
Lua i Stíl Chicago (17ú heag.)Armstrong, Gary author, agus Philip Kotler. Marketing: An Introduction. London : Pearson, 2011.
Lua MLA (9ú heag.)Armstrong, Gary author, agus Philip Kotler. Marketing: An Introduction. London : Pearson, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.