http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
association between physical activity and level of happiness among undegraduate students in Faculty of Medicine, University of Malaya
Jabatan Perubatan Kemasyarakatan dan Pencegahan,
M.P.H. Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya 2019.