APA (7e ed.) Bronvermelding

Avis, A. H. (2005). Accessibility and attitudinal barriers encountered in sectors of travel and tourism by travelers who have disabilities. UMI Dissertation Services.

Chicago (17e ed.) Bronvermelding

Avis, Amanda H. Accessibility and Attitudinal Barriers Encountered in Sectors of Travel and Tourism by Travelers Who Have Disabilities. Ann Arbor, Mich.: UMI Dissertation Services, 2005.

MLA (8e ed.) Bronvermelding

Avis, Amanda H. Accessibility and Attitudinal Barriers Encountered in Sectors of Travel and Tourism by Travelers Who Have Disabilities. UMI Dissertation Services, 2005.