Pakpahan, I. F., and N. Nugroho. “Analisis Pengaruh Harga Dan Promosi Terhadap Volume Penjualan Pada PT. Metro Artha Prakarsa”. Prosiding Seminar Nasional Teknologi Komputer Dan Sains, vol. 3, no. 1, July 2025, pp. 74-80, https://www.sainteks.seminars.id/prosainteks/article/view/440.