Khaira, Ulfa and Yerimadesi, Yerimadesi (2021) Validitas E-Modul Kimia Unsur Berbasis Guided Discovery Learning untuk Kelas XII SMA/ MA Validity of Elemental Chemistry E-Module Based on Guided Discovery Learning for Senior High School. Entalpi Pendidikan Kimia, 2 (1). pp. 47-56. ISSN 2774-5171