YURNALIZA. Effect Of Smoking Behaviour and The BMI On Ph Levels Of Saliva and Salivary Amylase Activity Among Male Students. International Journal of Ecophysiology, [S. l.], v. 4, n. 2, p. 1–8, 2022. DOI: 10.32734/ijoep.v4i2.11376. Disponível em: https://talenta.usu.ac.id/ijoep/article/view/11376. Acesso em: 13 aug. 2025.