Rejeki, Sri. “Ekstraksi Dan Penetapan Nilai SPF Minyak Nyamplung Dengan Metode Sektrofotometri (Extraction And SPF Value Determination Of Tamanu Oil By Spectrofotometri Methode)”. Indonesian Journal on Medical Science, vol. 2, no. 1, April 2015, https://ejournal.poltekkesbhaktimulia.ac.id/index.php/ijms/article/view/8.