Dratistiana, L. Y. “A Recipe for a Good and Stunning Presentation”. Swara Patra : Majalah Ilmiah PPSDM Migas, vol. 8, no. 3, Sept. 2018, pp. 1-9, http://ejurnal.ppsdmmigas.esdm.go.id/sp/index.php/swarapatra/article/view/2.