Fenny Wiji Astuti, et al. “Nalisis Nilai SPF Ekstrak Etanol, Fraksi N-Heksana, Fraksi Etil Asetat Dan Fraksi Air Kulit Batang Kawista (Limonia Acidissima Groff)”. Educational Harmony : International Journal of Education and Mathematics, vol. 1, no. 2, June 2024, pp. 27-33, https://education.ifrel.org/index.php/EducationalHarmony/article/view/21.