World Tourism Organization. (2001). Tourism satellite account (TSA) implementation project: Enzo Paci papers on measuring the economic significance of tourism. World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Tourism Organization. Tourism Satellite Account (TSA) Implementation Project: Enzo Paci Papers on Measuring the Economic Significance of Tourism. Madrid, Spain: World Tourism Organization, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)World Tourism Organization. Tourism Satellite Account (TSA) Implementation Project: Enzo Paci Papers on Measuring the Economic Significance of Tourism. World Tourism Organization, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.