Pedrajas, J. A. B. (2021). VaxCertPH certidicate not substitute foe other vaccine cards - DICT. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Pedrajas, Joseph Almer B. "VaxCertPH Certidicate Not Substitute Foe Other Vaccine Cards - DICT." Manila Bulletin 2021.
Lua MLA (9ú heag.)Pedrajas, Joseph Almer B. "VaxCertPH Certidicate Not Substitute Foe Other Vaccine Cards - DICT." Manila Bulletin, 2021.
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