id	domain	url
ideas-4635	u.lipi.go.id	http://u.lipi.go.id/1457703302
ideas-4635	doi.org	https://doi.org/10.1016/j.jml.2005.01.017
ideas-4635	books.google.co.id	https://books.google.co.id/books?id=zuzeaaaacaaj
ideas-4635	doi.org	https://doi.org/10.1080/01434632.1982.9994069
ideas-4635	doi.org	https://doi.org/10.1080/01434632.1986.9994254
ideas-4635	doi.org	https://doi.org/10.7575/aiac.ijels.v.6n.4p.35