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PERBEDAAN KESEJAHTERAAN PSIKOLOGIS LANSIA DITINJAU DARI BENTUK DUKUNGAN TEMAN SEBAYA : THE DIFFERENCES IN PSYCHOLOGICAL WELL-BEING OF THE ELDERLY IN TERMS OF SHAPE PEER SUPPORT ABSTRACT . JPPP 2019, 13 (2), 59-73. https://doi.org/10.32734/psikologia.v13i2.2268.