Sitorus, Marham, Retno Dwi Suyanti, Iis Siti Jahro, Suria Bersinar Siahaan, Innovayani Saragih, and Francisca T. A Sitorus. 2024. “Effectiveness of Sulfuric Acid and Hydrochloric Acid Catalysts in the Esterification of Frankincense Cinnamic Acid With Ethanol and Methanol”. Jurnal Pendidikan Kimia 16 (1):50-56. https://doi.org/10.24114/jpkim.v16i1.53231.