Ade Ariyani, Manihar Situmorang, and Simson Tarigan. “Need Analysis of Learning Resources for Teaching Gas Chromatography Materials”. Didaktika: Jurnal Kependidikan 13, no. 2 (May 14, 2024): 2297-2308. Accessed September 21, 2024. https://mail.jurnaldidaktika.org/contents/article/view/668.