Nasution, Nayo, 		Ismiasih, Ismiasih, AND 		Dinarti, Siwi.
" Tingkat Pengetahuan Petani Kelapa Sawit Dalam Penerapan Good Agricultural Practices (GAP): Sebuah Analisis Rating Scale" <em>JSEP (Journal of Social and Agricultural Economics)</em> [Online], Volume 16 Number 1 (14 May 2023)