Lua APA (7ú heag.)

Abbey,James. Hospitality sales & marketing (4.). The American Hotel & lodging Education Institute.

Lua i Stíl Chicago (17ú heag.)

Abbey,James. Hospitality Sales & Marketing. 4. Michigan: The American Hotel & lodging Education Institute.

Lua MLA (9ú heag.)

Abbey,James. Hospitality Sales & Marketing. 4. The American Hotel & lodging Education Institute.

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