World Tourism Leaders' Meeting on the Social Impacts of Tourism Manila, Philippines, World Tourism Organization, & Philippines Department of Tourism. (1997). World Tourism Leaders' meeting on the social impacts of tourism: Manila, Philippines, 22 May 1997 : final report. World Tourism Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Tourism Leaders' Meeting on the Social Impacts of Tourism Manila, Philippines, World Tourism Organization, και Philippines Department of Tourism. World Tourism Leaders' Meeting on the Social Impacts of Tourism: Manila, Philippines, 22 May 1997 : Final Report. Madrid, Spain: World Tourism Organization, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)World Tourism Leaders' Meeting on the Social Impacts of Tourism Manila, Philippines, et al. World Tourism Leaders' Meeting on the Social Impacts of Tourism: Manila, Philippines, 22 May 1997 : Final Report. World Tourism Organization, 1997.