Sadongdong, M. A. (2021). No COVID-19 vaccine shortage, stockpile to last till Aug. 17 - Galvez. Manila Bulletin.
芝加哥风格引文Sadongdong, Martin A. "No COVID-19 Vaccine Shortage, Stockpile to Last Till Aug. 17 - Galvez." Manila Bulletin 2021.
MLA引文Sadongdong, Martin A. "No COVID-19 Vaccine Shortage, Stockpile to Last Till Aug. 17 - Galvez." Manila Bulletin, 2021.
警告：这些引文格式不一定是100％准确.