Haryani, T. N., O. C. Ambarwati, N. Kusumastuti, and A. A. Nurwijayanti. “The Challenge to the Innovation of Complaint Mechanism from Mobile to IT-Based Complaint Mechanism”. KnE Social Sciences, Vol. 2, no. 4, June 2017, pp. 229-35, doi:10.18502/kss.v2i4.891.