Valente, . C. . S. (2021). Palace assures public: Covid-19 vaccines from govt for free. Manila Times.
Chicago-viite (17. p.)Valente, Catherine S. "Palace Assures Public: Covid-19 Vaccines from Govt for Free." Manila Times 2021.
MLA-viite (9. p.)Valente, Catherine S. "Palace Assures Public: Covid-19 Vaccines from Govt for Free." Manila Times, 2021.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.