E. Lumibao, “The Role of Apology Proclivity and Perceived Apology Sincerity in Predicting Romantic Relationship Satisfaction among Filipino Young Adults”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 7, no. 9, pp. 3815–3846, Sep. 2026, doi: 10.11594/ijmaber.07.09.07.