Ruiz, E. (2023). Metro Manila remains 'low-risk' for Covid-19. Manila Bulletin.
芝加哥风格引文Ruiz, Ellalyn. "Metro Manila Remains 'Low-risk' for Covid-19." Manila Bulletin 2023.
MLA引文Ruiz, Ellalyn. "Metro Manila Remains 'Low-risk' for Covid-19." Manila Bulletin, 2023.
警告：这些引文格式不一定是100％准确.