Casayuran, M. B. (2021). QC solon seeks issuance of 'e-vaccine cards' for fully vaccinated Filipinos. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Casayuran, Mario B. "QC Solon Seeks Issuance of 'E-vaccine Cards' for Fully Vaccinated Filipinos." Manila Bulletin 2021.
Lua MLA (9ú heag.)Casayuran, Mario B. "QC Solon Seeks Issuance of 'E-vaccine Cards' for Fully Vaccinated Filipinos." Manila Bulletin, 2021.
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