APA (7th ed.) Citation

Calayag, K. (2021). PH buys 40M doses of Pfizer vaccine. Manila Times.

Chicago Style (17th ed.) Citation

Calayag, Keith. "PH Buys 40M Doses of Pfizer Vaccine." Manila Times 2021.

MLA (9th ed.) Citation

Calayag, Keith. "PH Buys 40M Doses of Pfizer Vaccine." Manila Times, 2021.

Warning: These citations may not always be 100% accurate.