Mystkowska-Wiertelak, Anna, and Agnieszka Pietrzykowska. “L2 Willingness to Communicate (WTC) and International Posture in the Polish Educational Context”. Studies in Second Language Learning and Teaching, vol. 1, no. 1, Aug. 2011, pp. 119-34, doi:10.14746/ssllt.2011.1.1.7.