Abed Al- Janabi, Saad Abbas, et al. “Character Patterns According to Freiburg Classification and Its Relationship to Self - Realization of Players Participating in the Championship Mustansiriya University Volleyball”. International Journal of Psychosocial Rehabilitation, vol. 23, no. 5, Nov. 2020, pp. 1171-85, https://doi.org/10.61841/jr0b6w48.