(2021). Children under 16 to wait longer for vaccine - WHO. Manila Bulletin.
芝加哥风格引文"Children Under 16 to Wait Longer for Vaccine - WHO." Manila Bulletin 2021.
MLA引文"Children Under 16 to Wait Longer for Vaccine - WHO." Manila Bulletin, 2021.
警告：这些引文格式不一定是100％准确.