Christopher C. Anyadubalu,  Self-Efficacy, Anxiety, and Performance in the English Language among Middle-School Students in English Language Program in Satri Si Suriyothai School, Bangkok.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2010, vol. 39(3). 233 - 238
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/2271.