Umali, Fatima Angela C., and Antonio H. Chua. 2018. “Ehretia Microphylla (Tsaang Gubat) Versus Loratadine As Treatment for Allergic Rhinitis: A Randomized Controlled Trial”. Philippine Journal of Otolaryngology Head and Neck Surgery 32 (2):6-10. https://doi.org/10.32412/pjohns.v32i2.57.