Aoyama, Tatsuya, and Tomoko Takahashi. “International Students’ Willingness to Communicate in English As a Second Language: The Effects of L2 Self-Confidence, Acculturation, and Motivational Types”. Journal of International Students, vol. 10, no. 3, Aug. 2020, pp. 703-2, https://doi.org/10.32674/jis.v10i3.730.