Bloomberg. (2020). Moment of truth for COVID-19 vaccines may be known this month. Manila Bulletin.
芝加哥风格引文Bloomberg. "Moment of Truth for COVID-19 Vaccines May Be Known This Month." Manila Bulletin 2020.
MLA引文Bloomberg. "Moment of Truth for COVID-19 Vaccines May Be Known This Month." Manila Bulletin, 2020.
警告：这些引文格式不一定是100％准确.