Qiu, Chuane, Siti Shuhaida Shukor, Charanjit Kaur Swaran Singh, Guilin Wang, Xiaofen Zhong, and Yuehong Tian. 2022. “A Systematic Review on the Effectiveness of Blended Learning on learners’ EFL Vocabulary Performance”. Pegem Journal of Education and Instruction 12 (4):204-19. https://doi.org/10.47750/pegegog.12.04.21.