Abrina, D. (2020). Cavite residents part of Covid vaccine trial. Manila Times.
芝加哥风格引文Abrina, Dennis. "Cavite Residents Part of Covid Vaccine Trial." Manila Times 2020.
MLA引文Abrina, Dennis. "Cavite Residents Part of Covid Vaccine Trial." Manila Times, 2020.
警告：这些引文格式不一定是100％准确.