Calayag, K. (2020). Duterte backs Duque in vaccine deal ‘mess’. Manila Times.
Chicagoスタイル(17版)引用形式Calayag, Keith. "Duterte Backs Duque in Vaccine Deal ‘mess’." Manila Times 2020.
MLA(9版)引用形式Calayag, Keith. "Duterte Backs Duque in Vaccine Deal ‘mess’." Manila Times, 2020.
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