Putri, M. R., E. Citraresmana, and I. I. Sidiq. “Semantic Preference of the Word Okaa-San and Mama in Tsukuba Web Corpus: A Corpus Linguistic Analysis”. Journal of Japanese Language Education and Linguistics, vol. 7, no. 2, Aug. 2023, pp. 144-59, doi:10.18196/jjlel.v7i2.19217.