Widyasari, Natalia Adelia, et al. “Pengaruh Kualitas Produk, Harga Dan Suasana Terhadap Kepuasan Pelanggan Coffee Ruma.Pinara”. RIGGS: Journal of Artificial Intelligence and Digital Business, vol. 5, no. 2, May 2026, pp. 5331-40, doi:10.31004/riggs.v5i2.9200.