Nuratika, Sikin, Nilam Cahaya Fitri Yanti, and Ester Mayer. 2019. “Levels of Affixation in the Acquisition of English Morphology: A Review of Selected Paper”. REiLA : Journal of Research and Innovation in Language 1 (2), 68-72. https://doi.org/10.31849/reila.v1i2.2888.