*[https://www.theepochtimes.com/c-how-the-specter-of-communism-is-ruling-our-world How the Specter of Communism Is Ruling Our World]. ''The Epoch Times''.
*[https://www.theepochtimes.com/c-how-the-specter-of-communism-is-ruling-our-world How the Specter of Communism Is Ruling Our World]. ''The Epoch Times''.
−
+
*[https://www.theepochtimes.com/frankfurt-school-weaponized-u-s-education-against-civilization_3137064.html Frankfurt School Weaponized US Education Against Civilization, Alex Newman. ''Epoch Times'', November 5, 2019 Updated: March 10, 2020.
+
*[https://www.marxists.org/subject/frankfurt-school/index.htm The Frankfurt School and “Critical Theory”], Marxist Internet Archive.