Yusni, D., Sanjaya, Y., & Kusnadi, K. (2023). Enhancing Students’ Critical Thinking Skills Through Problem-Based Learning Values Clarification Technique (PBLVCT) on The Human Respiration System Concept. Journal of Natural Science and Integration, 6(2), 297–310. https://doi.org/10.24014/jnsi.v6i2.31382