Widyaningrum, Melvin, and darni darni. 2021. “Depresi Sebagai Problem Behavior Disorder Di Dalam Novel Kupu Wengi Mbangun Swarga Karya Tulus S (Pendekatan Psikologi Skinner)”. Jurnal Online Baradha 17 (1):1-26. https://doi.org/10.26740/job.v17n1.p1-26.