Goodrick-Clarke, Nicholas (2003). Black Sun: Aryan Cults, Esoteric Nazism, and the Politics of Identity. NYU Press. p. 47. ISBN978-0-8147-3155-0. Consultado el 4 de febrero de 2016. «The C18 hit lists, bomb-making instructions and escalating racial violence indicate the influence of American Nazi ideology and methods. In The Order, the magazine named after the U.S. terrorist group, editor John Cato paid fulsome tribute to its martyred leader, Robert Jay Mathews. It quoted Mathews's "declaration of war" against a "Jewish controlled mongrelized society, which is depriving White Aryans of their existence and homeland."».
Aaron Winter (2015). «Mathews, Robert Jay». En Ross, Jeffrey Ian, ed. Religion and Violence: An Encyclopedia of Faith and Conflict from Antiquity to the Present(en inglés). Routledge. ISBN978-1-317-46109-8. Consultado el 15 de mayo de 2020.
