Azzahrah, Humairah, Ahman Ahman, Irfan Fauzi, Silmi Hafiyani, and Silvia Agustina. 2023. “Common Errors of Reliability and Validity Testing in Guidance and Counselling Research”. Bulletin of Science Education 3 (3):289-98. https://doi.org/10.51278/bse.v3i3.868.