World Tourism Organization (WTO) & International Labour Organisation. (2014). Measuring employment in the tourism industries: Guide with best practices. World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Tourism Organization (WTO) και International Labour Organisation. Measuring Employment in the Tourism Industries: Guide with Best Practices. Spain: World Tourism Organization, 2014.
Παραπομπή σε μορφή MLA (9th εκδ.)World Tourism Organization (WTO) και International Labour Organisation. Measuring Employment in the Tourism Industries: Guide with Best Practices. World Tourism Organization, 2014.
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