Pham Bao Nhu, and Huynh Kim Nguyen. “The Relationship Between Gratitude and Prosocial Behavior Among High School Students in Da Nang: The Mediating Role of Meaning in Life”. RA Journal of Applied Research, vol. 11, no. 10, Oct. 2025, pp. 909-21, doi:10.47191/rajar/v11i10.11.