Hazliza Ariffin, N., Arsad, N., Hariz Ahmad, A., Bais, B., Kamal, N., Ab Aziz, N., Salasiah Mokri, S., & Mohd Mydin, R. (2019). Self-Leveling Laser for Direction Marking System. International Journal of Engineering & Technology, 8(1.2), 214-219. https://doi.org/10.14419/ijet.v8i1.2.24905