Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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