Estoque, Kurt Bern, et al. “The Role of Assurance and Safety in Shaping Customer Referrals: Insights from Car Rental Services in Malaybalay City”. International Journal of Sustainability and Advanced Integrated Research, vol. 2, no. 1, Jan. 2026, pp. 116-21, https://doi.org/10.65339/ijsair.V2.I1.14.