William, O. dan Christian, S. 2023. PENGARUH HARGA MINYAK KELAPA SAWIT DAN BATU BARA TERHADAP RETURN INDEKS HARGA SAHAM GABUNGAN. Jurnal Logic: Logistics & Supply Chain Center. 1, 2 (Jan 2023), 67–72. DOI:https://doi.org/10.33197/logic.v1i2.967.