Abbas, F., N. Anwar, M. Altaf, and F. Shoukat. “Frequency of Shoulder Pain and Level of Disability Among Laborers: Shoulder Pain & Level of Disability Amoung Laborers”. Pakistan Journal of Physical Therapy (PJPT), vol. 1, no. 3, Sept. 2020, pp. 12-15, doi:10.52229/pjpt.v1i3.460.