Purwaningsih, R., and I. Yenifi. “Usability Assessment of International Office Website of Diponegoro University With Scenario-Based Usability Evaluation Method and Wammi Method”. ComTech: Computer, Mathematics and Engineering Applications, vol. 6, no. 3, Sept. 2015, pp. 329-42, doi:10.21512/comtech.v6i3.2209.