I Gusti Ngurah Agung Windra Wartana Putra, and I Gusti Ayu Agung Septiari. “OPTIMIZATION OF GUMITIR FLOWER EXTRACT (TAGETES ERECTA L.) SUNSCREEN CREAM: SIMPLEX LATTICE DESIGN METHOD”. Journal Pharmaceutical Science and Application, vol. 5, no. 2, Dec. 2023, pp. 93-100, doi:10.24843/JPSA.2023.v05.i02.p06.