Angelo, R. M., & Vladimir, A. N. (2007). Hospitality today: An introduction (6th ed.). Educational Institute of the American Hotel & Motel Lodging Association.
Lua i Stíl Chicago (17ú heag.)Angelo, Rocco M., agus Andrew N. Vladimir. Hospitality Today: An Introduction. 6th ed. Lansing, Mich: Educational Institute of the American Hotel & Motel Lodging Association, 2007.
Lua MLA (9ú heag.)Angelo, Rocco M., agus Andrew N. Vladimir. Hospitality Today: An Introduction. 6th ed. Educational Institute of the American Hotel & Motel Lodging Association, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.