David Xiaoqian Sun and  Khairunnisa Binti Haji Sibah and  Jr. and  Lejak Anak Ambol,  The Relationships between Physical Activity Levels, Enjoyment of Physical Activity, and Body Mass Index among Bruneian Secondary School Adolescents.   journal   = {International Journal of Sport and Health Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 90(6). 343 - 347
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9998590.