Sriyono, S., Simanjuntak, O.S. , Agusdin, R.P. and Tahalea, S.P. 2022. A Measuring Satisfaction of Member UPN Veteran Yogyakarta Cooperative Whatsapp Group: Webqual 4.0 Model Adoption. RSF Conference Series: Engineering and Technology. 1, 1 (Nov. 2022), 603–609. DOI:https://doi.org/10.31098/cset.v1i1.436.