Argaw T. Gurmu and  Muhammad N. Mahmood,  Investigation of Learning Challenges in Building Measurement Unit.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2020, vol. 158(2). 144 - 150
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10011077.