Soeprayogie, A., E. Hanani, and B. Priyono. “Certification Impact on Performance of PESH Teachers in State Junior High Schools in Paser Regency, East Kalimantan Province”. Journal of Physical Education and Sports, Vol. 10, no. 2, June 2021, pp. 123-8, doi:10.15294/jpes.v10i2.45191.