WIJOYO H, SUROTO B. ANALISIS PENENTUAN HARGA POKOK PRODUKSI KELAPA SAWIT. J. Ilm. Pertan. [Internet]. 2007Feb.1 [cited 2024May5];3(2):54-0. Available from: https://journal.unilak.ac.id/index.php/jip/article/view/1303