Referensi
- Chart.js. Simple yet flexible JavaScript charting for designers & developers, https://www.chartjs.org/
- Chart.js: Is it possible to get the label of a dataset in a stacked bargraph on clicking it?, https://stackoverflow.com/questions/44408670/chart-js-is-it-possible-to-get-the-label-of-a-dataset-in-a-stacked-bargraph-on
