Nugrahani Machali, R. and Abdul Wahid, N. 2018. The Influences of Motivation, Opportunity and Ability on Customer to Customer Online Know-How Exchange and Social Identity as a moderator in Indonesian Z Generation. International Journal of Engineering & Technology. 7, 4.38 (Dec. 2018), 829–831. DOI:https://doi.org/10.14419/ijet.v7i4.38.27554.