AryanandaM., BasuniS., and SunarmintoT. “Promotions Effectiveness of Kawah Putih Ecotourism by Perhutani’s Independenly Bussines Unit I”. Media Konservasi, Vol. 22, no. 2, Jan. 2018, pp. 188-95, doi:10.29244/medkon.22.2.188-195.