Liong Y, Wulandari A. Analisis Pengaruh Biaya Promosi Berbasis Website, Biaya Training Staf Sales, dan Pengeluaran Relasional Terhadap Volume Penjualan PT Pusindo Murniraya: Analysis of the effect of Website-based Promotion Costs, Sales Staff Training Costs, and Relational Expenses on PT Pusindo Murniraya’s Sales Volume. j. pengemb. wiraswasta [Internet]. 2023 Jul. 27 [cited 2025 Aug. 25];25(1):25-3. Available from: https://journal.ipwija.id/index.php/jpw/article/view/4