id	domain	url
efajoead-4774	scholar.google.com	http://scholar.google.com/scholar?hl=en&btng=search&q=intitl
efajoead-4774	teacherfabio.com	http://teacherfabio.com/2012/09/19/howtobe-polite-in-english/.accessed
efajoead-4774	doi.org	https://doi.org/10.17509/ijal.v8i3.15258
efajoead-4774	doi.org	https://doi.org/10.21744/lingcure.v5ns1.1493
efajoead-4774	www.researchgate.net	https://www.researchgate.net/publication/344637114
efajoead-4774	ejournal.bsi.ac.id	https://doi.org/10.31294/w.v12i1http://ejournal.bsi.ac.id/ejurn
efajoead-4774	doi.org	https://doi.org/10.25077/ar.4.1.52-57.2017