Putri, Rizka Cahyaning Arifin. “From KNIP Building to Sarinah Mall Building: Societeit Concordia in Malang City 1900-1970”. Jurnal Sejarah Dan Budaya, vol. 15, no. 1, November 2025, https://archive.p5i.org/index.php/walasuji/article/view/80.