Primadina, Nova, Nilam sari, Yelvi Levani, and Nur Aisah Ibrahimiyah. “The Effect of Aetoxylon Sympetalum Essential Oil Treatment on Focus Endurance Level of First-Year Medical Students”. Qanun Medika - Medical Journal Faculty of Medicine Muhammadiyah Surabaya 9, no. 01 (January 30, 2025). Accessed December 5, 2025. https://journal.um-surabaya.ac.id/qanunmedika/article/view/23675.