Hasibuan, H., A., Nuryanto, E.(2017).Pedoman penentuan potensi rendemen cpo dan inti (cet.1).Medan:The Asian Vegetable Research And Development Center.
Gaya MLA
Hasibuan, H., A., Nuryanto, E..Pedoman penentuan potensi rendemen cpo dan inti.cet.1Medan:The Asian Vegetable Research And Development Center,2017.Text.