Oliveros، Benjie (2006). "May 1st, a History of Struggle". Bulatlat. Alipato Publications. ج. 6 ع. 32. مؤرشف من الأصل في 2016-03-03. اطلع عليه بتاريخ 2016-01-09.
AN ACT TO OUTLAW THE COMMUNIST PARTY OF THE PHILIPPINES AND SIMILAR ASSOCIATIONS, PENALIZING MEMBERSHIP THEREIN, AND FOR OTHER PURPOSES،Republic Act No. 1700 of June 20, 1957. اطلع عليه بتاريخ March 26, 2017.
Oliveros، Benjie (2006). "May 1st, a History of Struggle". Bulatlat. Alipato Publications. ج. 6 ع. 32. مؤرشف من الأصل في 2016-03-03. اطلع عليه بتاريخ 2016-01-09.