Wulandari, Pradea. 2021. “DESIGNING A SMARTPHONE-BASED RETNO HEALTHY HOME APPLICATION USER INTERFACE AND EVALUATION OF THE SYSTEM USABILITY SCALE (SUS)”. JURNAL ILMU KESEHATAN BHAKTI SETYA MEDIKA 6 (1), 21-29. https://doi.org/10.56727/bsm.v6i1.50.