<https://www.researchlearningcenter.org/2020/berikut-langkah-langkah-dalam-penelitian-geografis/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.researchlearningcenter.org/2020/berikut-langkah-langkah-dalam-penelitian-geografis/>