Choiruna HP, Sitorus R, Kariasa IM. The Effect of Inhaler Training on Self-Efficacy among Patients with COPD. JoB [Internet]. 2022Sep.30 [cited 2024Apr.29];4(3):207-15. Available from: http://bionursing.fikes.unsoed.ac.id/bion/index.php/bionursing/article/view/156