D. Septi Nur Afifah, M. Ilman Nafi’an, T. Linggo Wati, N. Ariyanti, S. ., and . ., “Augmented Reality (AR) Sandbox: 3-Dimensional Media to Learn Topographic Maps”, IJET, vol. 7, no. 4.7, pp. 468–471, Sep. 2018, doi: 10.14419/ijet.v7i4.7.27361.