Mackare, Kristīne, and Anita Jansone. “RESEARCH OF GUIDELINES FOR DESIGNING E-STUDY MATERIALS”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 15, 2017): 90–96. Accessed November 23, 2024. https://journals.ru.lv/index.php/ETR/article/view/2560.