Yadi, S., I. L. Sari, Y. Septemi, H. Helita, and Y. Elesti. “Systematic Literature Review: Branches of Philosophy and Schools of Thought in Philosophy”. PPSDP International Journal of Education, vol. 4, no. 2, Nov. 2025, pp. 38-56, doi:10.59175/pijed.v4i2.647.