(2021). Over 1 B COVID-19 vaccine doses administered globally. Philippine Star.
Chicago Style (17th ed.) Citation"Over 1 B COVID-19 Vaccine Doses Administered Globally." Philippine Star 2021.
MLA引文"Over 1 B COVID-19 Vaccine Doses Administered Globally." Philippine Star, 2021.
警告：這些引文格式不一定是100％准確.