Umam, Kholid Khairul, and Dwi Wahyudiati. “Ethno-Chemistry: Relevance Analysis of Electron Valence Subject Material to Sasak Local Wisdom As a Chemistry Learning Resource”. Hydrogen: Jurnal Kependidikan Kimia, vol. 11, no. 5, Oct. 2023, pp. 710-9, doi:10.33394/hjkk.v11i5.9069.