RETNO, Nimas Puspo et al. Pengaruh Model Project Based Learning Berbasis Social Ourdoor Study Terhadap Keterampilan Observasi dan Hasil Belajar Geografi Siswa SMA. MAJALAH PEMBELAJARAN GEOGRAFI, [S.l.], v. 6, n. 2, p. 166-174, nov. 2023. ISSN 2622-125X. Available at: <https://jurnal.unej.ac.id/index.php/PGEO/article/view/41748>. Date accessed: 19 may 2024. doi: https://doi.org/10.19184/pgeo.v6i2.41748.