WASET
Bolong, N. , Makinda, J. , Saad, I. (2014), 'Effect of Open-Ended Laboratory toward Learners Performance in Environmental Engineering Course: Case Study of Civil Engineering at Universiti Malaysia Sabah', World Academy of Science, Engineering and Technology, Open Science Index 92, International Journal of Educational and Pedagogical Sciences, 8(8), 2562 - 2566.