APA引文

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引文

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

警告：這些引文格式不一定是100％准確.