Damanik D. WILLINGNESS TO PAY (WTP) PENGUNJUNG MUSEUM SIMALUNGUN DI KOTA PEMATANGSIANTAR. IKRAITH-EKONOMIKA [Internet]. 2019Nov.14 [cited 2024Nov.26];2(3):9-16. Available from: http://journals.upi-yai.ac.id/index.php/IKRAITH-EKONOMIKA/article/view/646