id	domain	url
ideas-2475	u.lipi.go.id	http://u.lipi.go.id/1457703302
ideas-2475	doi.org	https://doi.org/10.1515/9783110214260.347
ideas-2475	doi.org	https://doi.org/10.13140/rg.2.2.25880.65282
ideas-2475	doi.org	https://doi.org/10.24256/ideas.v1i1.126
ideas-2475	doi.org	https://doi.org/10.31227/osf.io/nw94m
ideas-2475	www.cambridge.org	https://www.cambridge.org/my/files/5913/6689/9826/8769_study_guide_up
ideas-2475	doi.org	https://doi.org/10.24256/ideas.v1i1.126