Cherepashchuk, A. A. “The Historical Facts - Integer Element of Scientific-Technical, Natural and Humanitarian Knowledge As the Precondition of Vocational Training”. Visnyk of Vinnytsia Politechnical Institute, no. 4, Nov. 2010, pp. 42-46, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/616.