id	domain	url
ideas-6550	books.google.co.id	https://books.google.co.id/books?id=v43vs07tgemc
ideas-6550	doi.org	https://doi.org/10.7202/037027ar
ideas-6550	books.google.co.id	https://books.google.co.id/books?id=4ukbaaaaqbaj