Lua APA (7ú heag.)

Buhalis, D., & Costa, C. (2006). Tourism business frontiers: Consumers, products and industry. Elsevier.

Lua i Stíl Chicago (17ú heag.)

Buhalis, Dimitrios, agus Carlos Costa. Tourism Business Frontiers: Consumers, Products and Industry. Amsterdam: Elsevier, 2006.

Lua MLA (8ú heag.)

Buhalis, Dimitrios, agus Carlos Costa. Tourism Business Frontiers: Consumers, Products and Industry. Elsevier, 2006.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.