“Assessment of Service Quality Using Weighted SERVPERF Approach: A Case Study on the Coffee Cupping Training at Indonesian Coffee and Cocoa Research Institute”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), vol. 35, no. 1, Apr. 2019, pp. 70-84, https://mail.ccrjournal.com/index.php/ccrj/article/view/352.