Sihombing, Immanuel, and Ali Nurman. “ANALISIS SPASIAL TERHADAP PERSEBARAN FASILITAS SEKUNDER PARIWISATA DI KOTA MEDAN”. Tunas Geografi, vol. 6, no. 1, June 2017, pp. 25-37, doi:10.24114/tgeo.v6i1.8347.