Widodo, Muhammad Singgih, and Ratna Ekasari. “ANALISIS PRODUK, PERSEPSI HARGA, PROMOSI TERHADAP VOLUME PENJUALAN PAVING BLOK UD. CAHAYA INDAH TAMAN SIDOARJO”. IQTISHADequity jurnal MANAJEMEN 3, no. 2 (June 6, 2021): 327–336. Accessed June 7, 2025. https://e-journal.umaha.ac.id/iqtisad/article/view/942.