Citazione Stile APA (7a Edizione)

Tulfo, R. . T. (2020). Covid-19 vaccine before yearend – Digong. Manila Times.

Citazione stile Chigago Style (17a edizione)

Tulfo, Ramon T. "Covid-19 Vaccine Before Yearend – Digong." Manila Times 2020.

Citatione MLA (9a ed.)

Tulfo, Ramon T. "Covid-19 Vaccine Before Yearend – Digong." Manila Times, 2020.