Yaremchuk, Ihor A., Ihor M. Pochekalin, Yurii O. Sychevskyi, Olha V. Babich, and Oleksandr S. Lahodynskyi. “IMPLEMENTATION PECULIARITIES OF THE ENGLISH LANGUAGE LEARNING ELECTRONIC TEXTBOOK IN THE STATE BORDER GUARD SERVICE OF UKRAINE”. Information Technologies and Learning Tools 73, no. 5 (October 22, 2019): 67-85. Accessed February 26, 2021. https://journal.iitta.gov.ua/index.php/itlt/article/view/2555.