Jahedizadeh, S., Ghonsooly, B., & Ghanizadeh, A. (2021). A model of language students’ sustained flow, personal best, buoyancy, evaluation apprehension, and academic achievement. Porta Linguarum. An International Journal of Foreign Language Teaching and Learning, (35), 257–275. https://doi.org/10.30827/portalin.vi35.15755