Faktor ekonomi yang mempengaruhi perkembangan industri pelancongan?

http://pelancongan06.blogspot.com/2010/09/faktor-faktor-yang-mempengaruhi.html

this one is in english and perhaps less relevant but I found it useful in my own research : http://www.helium.com/items/1927436-factors-that-affect-the-tourism-industry