Date: Jul 01, 2020
Source: Jambura Geo Education Journal
Publisher: Geography Education Study Program, FMIPA UNG, Universitas Negeri Gorontalo
Date: Jun 06, 2020
Source: LaGeografia
Publisher: Program Studi Pendidikan Geografi, Jurusan Geografi, FMIPA, Universitas Negeri Makassar