Crisostomo, S. (2022). DOH recommends 4th dose for seniors, vulnerable. Philippine Star.
Dyfyniad Arddull ChicagoCrisostomo, Sheila. "DOH Recommends 4th Dose for Seniors, Vulnerable." Philippine Star 2022.
Dyfyniad MLACrisostomo, Sheila. "DOH Recommends 4th Dose for Seniors, Vulnerable." Philippine Star, 2022.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.