Afhami SE, Hasin A. Pengaruh Standard Operating Procedure dan Safety Management terhadap Kualitas Layanan pada Wisata Jeep Lava Tour Merapi di Sleman. Selma [Internet]. 2023 Apr. 7 [cited 2024 Nov. 14];2(1):268-81. Available from: https://journal.uii.ac.id/selma/article/view/28115