Ulfiani Latifah and Katrin Setio Devi, “Evaluation of Reference Service Quality in the Institut Seni Indonesia Library Surakarta Using TERRA Model”, Tad. J. Ilm. Perp. Inf., vol. 6, no. 1, pp. 15–26, Jun. 2025, doi: 10.19109/tadwin.v6i1.27982.