APA-referens (7:e uppl.)

Sadongdong, M. A. (2020). PH signs tripartite vaccine deal: COVID-19 vaccine supply agreement linked by Galvez, Concepcion, AstraZeneca. Manila Bulletin.

Chicago-referens (17:e uppl.)

Sadongdong, Martin A. "PH Signs Tripartite Vaccine Deal: COVID-19 Vaccine Supply Agreement Linked by Galvez, Concepcion, AstraZeneca." Manila Bulletin 2020.

MLA-referens (9:e uppl.)

Sadongdong, Martin A. "PH Signs Tripartite Vaccine Deal: COVID-19 Vaccine Supply Agreement Linked by Galvez, Concepcion, AstraZeneca." Manila Bulletin, 2020.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.