Tupas, E. (2021). COVID variant patient now asymptomatic. Philippine Star.
Cita Chicago (17th ed.)Tupas, Emmanuel. "COVID Variant Patient Now Asymptomatic." Philippine Star 2021.
Cita MLA (9th ed.)Tupas, Emmanuel. "COVID Variant Patient Now Asymptomatic." Philippine Star, 2021.
Atenció: Aquestes cites poden no estar 100% correctes.