F. H. Sinaga, R. Nurmalina, and A. Rifin, “EFFICIENCY ANALYSIS OF PALM KERNEL OIL AS A RAW MATERIAL IN IMPROVING SUPPLY CHAIN PERFORMANCE: CASE STUDY AT PT XYZ”, J. AGRISEP: Kaj. Mas. Sos. Ek. Pert. n. Agr., vol. 22, no. 02, pp. 427–446, Sep. 2023.