., Agusta, and Sariyun Anwar. 2019. “APLIKASI FORECASTING PENJUALAN DENGAN METODE SINGLE EXPONENTIAL SMOOTHING (STUDI KASUS : OPTIK NUSANTARA)”. SINTAK 3 (December). https://www.unisbank.ac.id/ojs/index.php/sintak/article/view/7600.