Vega, C. M. 1. (1971). Barikada: Sagisag ng kalayaan. International Graphic Service.
芝加哥风格引文Vega, Celestino M. 1910. Barikada: Sagisag Ng Kalayaan. Quezon City: International Graphic Service, 1971.
MLA引文Vega, Celestino M. 1910. Barikada: Sagisag Ng Kalayaan. International Graphic Service, 1971.
警告：这些引文格式不一定是100％准确.