Παραπομπή APA

World Tourism Organization., & UNWTO. (2013). UNWTO High-level Regional Conference on Green Tourism: Final Report Chiang Mai, Thailand 3-5 May 2012. Madrid: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization., and UNWTO. UNWTO High-level Regional Conference On Green Tourism: Final Report Chiang Mai, Thailand 3-5 May 2012. Madrid: World Tourism Organization, 2013.

Παραπομπή MLA

World Tourism Organization., and UNWTO. UNWTO High-level Regional Conference On Green Tourism: Final Report Chiang Mai, Thailand 3-5 May 2012. Madrid: World Tourism Organization, 2013.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.