Oktaviani, Alvina, Nuriya Nuriya, & Arif Setyo Upoyo.
" CASE STUDY: THE EFFECT OF BUTEKYO BREATHING TECHNIQUE ON PEAK EKSPIRATORY FLOW (PEF) AND OXYGEN SATURATION IN ASTHMA PATIENTS." <em>International Journal of Biomedical Nursing Review</em> [Online], 3.2 (2024): 5-10. Web.  4 Apr. 2025