Linna, A.-K., Ylönen, I. and Salmi, A. 2023. Monitoring organizational Article Processing Charges (APCs) using external sources: Turku University Library case. LIBER Quarterly: The Journal of the Association of European Research Libraries. 33, 1 (Jul. 2023), 1–23. DOI:https://doi.org/10.53377/lq.13361.