O’Bryan, Anne, and Volker Hegelheimer. “Using a Mixed Methods Approach to Explore Strategies, Metacognitive Awareness and the Effects of Task Design on Listening Development”. Canadian Journal of Applied Linguistics, vol. 12, no. 1, Apr. 2009, pp. 9-38, https://journals.lib.unb.ca/index.php/CJAL/article/view/19897.