Kabiling, G. D. (2021). Ayala Corp. procuring 450,000 doses of AstraZeneca COVID vaccines. Manila Bulletin.
Cita Chicago Style (17a ed.)Kabiling, Genalyn D. "Ayala Corp. Procuring 450,000 Doses of AstraZeneca COVID Vaccines." Manila Bulletin 2021.
Cita MLA (9a ed.)Kabiling, Genalyn D. "Ayala Corp. Procuring 450,000 Doses of AstraZeneca COVID Vaccines." Manila Bulletin, 2021.
Precaución: Estas citas no son 100% exactas.