PURBANINGTIAS, T. E.; WIYANTOKO, B.; KURNIAWATI, P.; SARI, M. K. Decreasing in Acid Number of Patchouli Oil by Different Natural Adsorbent and Variation of Contact Time. EKSAKTA: Journal of Sciences and Data Analysis, [S. l.], v. 14, n. 1, p. 27–33, 2014. Disponível em: https://jurnal.uii.ac.id/Eksakta/article/view/6019. Acesso em: 2 may. 2024.