HAKIM, L. “PLANNING FOR NATURE-BASED TOURISM IN EAST JAVA: RECENT STATUS OF BIODIVERSITY, CONSERVATION, AND ITS IMPLICATION FOR SUSTAINABLE TOURISM”. ASEAN Journal on Hospitality and Tourism, vol. 7, no. 2, Dec. 2016, pp. 155-67, https://journals.itb.ac.id/index.php/ajht/article/view/3427.