Oktrivia, R.J. and Maryam, E.W. 2021. Social Loafing On Students Of Muhammadiyah University Sidoarjo. Academia Open. 5, (Aug. 2021), 10.21070/acopen.5.2021.2135. DOI:https://doi.org/10.21070/acopen.5.2021.2135.