Yusni, D., Sanjaya, Y. and 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), pp. 297–310. doi: 10.24014/jnsi.v6i2.31382.