Asuncion, N. S. M., A. J. M. Glova, J. M. L. Martin, L. V. Manzan, and W. C. R. Pagtaconan. “SignApp: An Assistive Tool for Learners With Hearing Impairment”. Asia Pacific Higher Education Research Journal (APHERJ), vol. 3, no. 2, Dec. 2016, doi:10.56278/apherj.v3i2.285.