Green, P. E. (1998). Research for marketing (1st edition.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Green, Paul E. Research for Marketing. 1st edition. New Delhi: Prentice-Hall, 1998.
Lua MLA (9ú heag.)Green, Paul E. Research for Marketing. 1st edition. Prentice-Hall, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.