Afifah, S., Mudzakir, A. and Nandiyanto, A. (2022) “How to Calculate Paired Sample t-Test using SPSS Software: From Step-by-Step Processing for Users to the Practical Examples in the Analysis of the Effect of Application Anti-Fire Bamboo Teaching Materials on Student Learning Outcomes”, Indonesian Journal of Teaching in Science, 2(1), pp. 81–92. doi:10.17509/ijotis.v2i1.45895.