(2021). High-income nations have begun vaccinations. IN Editorial [column]. Manila Bulletin.
芝加哥风格引文"High-income Nations Have Begun Vaccinations. IN Editorial [column]." Manila Bulletin 2021.
MLA引文"High-income Nations Have Begun Vaccinations. IN Editorial [column]." Manila Bulletin, 2021.
警告：这些引文格式不一定是100％准确.