Anwar, Rahmawati, Farida Tabri, Anis Irawan Anwar, Anni Adriani, Burhanuddin Bahar, and Muhammad Nasrum Massi. 2018. “The Relationship Between Propionibacterium Acnes and Free Fatty Acid Levels of the Skin Surface in Acne Vulgaris Patients”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 37 (1):66-73. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8623.