Blanco Cano, E.; García-Martín, J. The Impact of Service-Learning (SL) on Various Psychoeducational Variables of University Students: Civic Attitudes, Critical Thinking, Group Work Skills, Empathy and Self-Concept. A Systematic Review. Rev. complut. educ 2021, 32 (4), 639-649. https://doi.org/10.5209/rced.70939.