Salleh, I., M.Z. Md. Zain, M.H. Soad, A.R. Musa, M. Mohamad, and M. Hussein. 2016. “A Qibla Compass for Visually Impaired Muslims”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 8 (7):13-16. https://jtec.utem.edu.my/jtec/article/view/1271.