Pratama, Prasetya Hendri, Djumali Djumali, and Sri Hartono. “PENGARUH HARGA, PROMOSI DAN KUALITAS PRODUK TERHADAP KẸPUTUSAN PEMBELIAN BUKU DI SHOWROOM PT. TIGA SERANGKAI SURAKARTA”. JURNAL ILMIAH EDUNOMIKA 3, no. 02 (October 9, 2019). Accessed June 28, 2025. https://jurnal.stie-aas.ac.id/index.php/jie/article/view/671.