Matondang, Mona Annisa, Bahruni ., and Rachmad Hermawan. 2018. “The Effect of Visitor Satisfaction Level on Willingness to Pay at Plengkung, in Alas Purwo National Park”. Media Konservasi 22 (2), 164-70. https://doi.org/10.29244/medkon.22.2.164-170.