Situmeang, Ona, AND 		Sagala, Haris.
" RANCANG BANGUN MESIN SCREW PRESS PENGHASIL MINYAK GORENG KELAPA ( COCONUT OIL ) KAPASITAS 18 KG/JAM" <em>Jurnal Teknologi Mesin UDA</em> [Online], Volume 2 Number 1 (30 June 2021)