Sinaga, Yetty, 		Wahyuningsih, Sri, AND 		Siringoringo, Meiliyani.
" Peramalan Produksi Kelapa Sawit Menggunakan Metode Pegel’s Exponential Smoothing" <em>EKSPONENSIAL</em> [Online], Volume 12 Number 2 (30 December 2021)