Davidson, R. (1994). Tourism (2nd.). Pitman.
Lua i Stíl Chicago (17ú heag.)Davidson, Rob. Tourism. 2nd. London: Pitman, 1994.
Lua MLA (9ú heag.)Davidson, Rob. Tourism. 2nd. Pitman, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.