Nihayati, H. E., L. Nurhanifah, and I. Krisnana. “The Effect of Psychoeducation on Self-Efficacy and Motivation for Taking Treatment in Breast Cancer Patients (Ca Mammae)”. Jurnal Ners, vol. 16, no. 1, May 2021, pp. 96-100, doi:10.20473/jn.v16i1.22560.