Sofyan, Sofyan, et al. “Effect of Breathing Nostril and Back Massage On Blood Pressure Reduction in Hypertension Patients in The Working Area of Hospital Pertamina Jaya”. STRADA : Jurnal Ilmiah Kesehatan, vol. 9, no. 2, Nov. 2020, pp. 1396-02, doi:10.30994/sjik.v9i2.484.