World Tourism Organization & Fayos Sola, E. (1997). An introduction to TEDQUAL: A methodology for quality in tourism education and training. World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Tourism Organization και Eduardo Fayos Sola. An Introduction to TEDQUAL: A Methodology for Quality in Tourism Education and Training. Madrid: World Tourism Organization, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)World Tourism Organization και Eduardo Fayos Sola. An Introduction to TEDQUAL: A Methodology for Quality in Tourism Education and Training. World Tourism Organization, 1997.
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