University of the Philippines (Diliman). Main Library & Filipiniana Special Collections Project Staff. (1998). Philippine radical papers in the University of the Philippines Diliman Main Library: A subject guide. University of the Philippines Press.

University of the Philippines (Diliman). Main Library and Filipiniana Special Collections Project Staff. Philippine Radical Papers in the University of the Philippines Diliman Main Library: A Subject Guide. Quezon City: University of the Philippines Press, 1998.

University of the Philippines (Diliman). Main Library and Filipiniana Special Collections Project Staff. Philippine Radical Papers in the University of the Philippines Diliman Main Library: A Subject Guide. University of the Philippines Press, 1998.