Yao Zhou, et al. “The Interplay of Ideal L2 Self, L2 Investment and L2 Identity of EFL Learners in Higher Education: A Systematic Review from 2014 to 2024”. Environment and Social Psychology, vol. 10, no. 9, Oct. 2025, p. ESP-4122, doi:10.59429/esp.v10i9.4122.