Boonpattanaporn, P. “Opportunities for Practicing English: It Is a Matter of Picking Them up”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, vol. 34, no. 3, Aug. 2014, pp. 176-90, https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/190225.