Meeting Travel and Tourism Recovery Committee & World Tourism Organization Market Intelligence and Promotion Section. (2001). Tourism after 11 September 2001: Analysis, remedial actions and prospects (updated November 2001). World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)Meeting Travel and Tourism Recovery Committee και World Tourism Organization Market Intelligence and Promotion Section. Tourism After 11 September 2001: Analysis, Remedial Actions and Prospects (updated November 2001). World Tourism Organization, 2001.
Παραπομπή σε μορφή MLA (8th εκδ.)Meeting Travel and Tourism Recovery Committee και World Tourism Organization Market Intelligence and Promotion Section. Tourism After 11 September 2001: Analysis, Remedial Actions and Prospects (updated November 2001). World Tourism Organization, 2001.