Тарнопольський, Олег Борисович. 2016. “Three Basic Principles of Designing Programs of Teaching English to Adults Who Learn It Outside University Language Programs”. The Journal of V.N. Karazin Kharkiv National University. Series: Foreign Philology. Methods of Foreign Language Teaching, no. 82 (March), 15-20. https://periodicals.karazin.ua/foreignphilology/article/view/5393.