id	domain	url
ideas-6543	u.lipi.go.id	http://u.lipi.go.id/1457703302
ideas-6543	doi.org	https://doi.org/10.14221/ajte.2010v35n1.2
ideas-6543	doi.org	https://doi.org/10.14221/ajte.2013v38n2.2
ideas-6543	doi.org	https://doi.org/10.1111/j.1540-4781.2009.00827.x
ideas-6543	doi.org	https://doi.org/10.1177/027347530123200
ideas-6543	doi.org	https://doi.org/10.4324/9781351006743
ideas-6543	www.ef.com	https://www.ef.com/epi
ideas-6543	doi.org	https://doi.org/10.1016/j.sbspro.2009.01.110
ideas-6543	link.springer.com	https://link.springer.com/article/10.1023/a:1004068500314
ideas-6543	doi.org	https://doi.org/10.1111/1540-4781.00194
ideas-6543	doi.org	https://doi.org/10.15639/teflinjournal.v21i2/118-136
ideas-6543	doi.org	https://doi.org/10.1111/j.1540-4781.2009.00830.x
ideas-6543	doi.org	https://doi.org/10.1016/j.sbspro.2014.03.535
ideas-6543	doi.org	https://doi.org/10.21831/lt.v10i1.57996
ideas-6543	doi.org	https://doi.org/10.5539/elt.v2n4p130
ideas-6543	doi.org	https://doi.org/10.52121/ijessm.v3i2.173
ideas-6543	doi.org	https://doi.org/10.1111/0026-7902.00107
ideas-6543	koreatesol.org	http://koreatesol.org/sites/default/files/pdf_publications/kotesolproceeds2006web.pdf
ideas-6543	www.teslej.org	http://www.teslej.org/ej39/a2.htm