Zahid, I. “Kesantunan Positif Facebook Public Health Malaysia Dalam Memerangi Covid-19: Positive Politeness of Public Health Malaysia’s Facebook in Combating Covid-19”. International Journal of Language Education and Applied Linguistics, vol. 10, no. 2, Dec. 2020, pp. 68-79, doi:10.15282/ijleal.v10.4447.