Agustinova, Danu Eko, et al. “School-Based Nonformal Learning Support for Slow Learners: A Case Study of the Talent Optimizing Program in History Education”. Journal of Nonformal Education, vol. 12, no. 2, Aug. 2026, pp. 576-8, https://doi.org/10.15294/jone.v12i2.30971.