Pedrajas, J. A. B. (2021). Manila residents returning from provinces required to take swab test. Manila Bulletin.
Chicago-viite (17. p.)Pedrajas, Joseph Almer B. "Manila Residents Returning from Provinces Required to Take Swab Test." Manila Bulletin 2021.
MLA-viite (9. p.)Pedrajas, Joseph Almer B. "Manila Residents Returning from Provinces Required to Take Swab Test." Manila Bulletin, 2021.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.