Jennings, G. (2001). Tourism research. Wiley.
Lua i Stíl Chicago (17ú heag.)Jennings, Gayle. Tourism Research. New York: Wiley, 2001.
Lua MLA (9ú heag.)Jennings, Gayle. Tourism Research. Wiley, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.