Bloomberg, Reuters, & Agence France-Presse. (2020). COVUD-19 vaccines in human trials stage. Manila Bulletin.
芝加哥风格引文Bloomberg, Reuters, 与 Agence France-Presse. "COVUD-19 Vaccines in Human Trials Stage." Manila Bulletin 2020.
MLA引文Bloomberg, et al. "COVUD-19 Vaccines in Human Trials Stage." Manila Bulletin, 2020.
警告：这些引文格式不一定是100％准确.