Lapian, S. L. H. V. J., & Tumbel, A. (2019). Analysis of Green Marketing Mix Factors On Hotel Industry (Study on Sintesa Peninsula Hotel Manado; Discovery Kartika Plaza Denpasar; Hyatt Regency Yogyakarta; Grand Melia Jakarta). International Review of Management and Marketing, 8(6), 112–121. Retrieved from https://www.econjournals.com/index.php/irmm/article/view/7116