Fariaman Purba, and Darwin Damanik. “Analisis Willingness To Pay (Wtp) Pengunjung Taman Hewan Di Kota Pematangsiantar Pasca Pandemi Covid19”. Jurnal Manajemen Kreatif dan Inovasi 1, no. 4 (September 8, 2023): 143–157. Accessed October 5, 2024. https://ifrelresearch.org/index.php/jmki-widyakarya/article/view/1271.