id	domain	url
educationr-3733	doi.org	https://doi.org/10.14507/er.v31.3733
educationr-3733	nces.ed.gov	https://nces.ed.gov/fastfacts/display.asp?id=372
educationr-3733	creativecommons.org	https://creativecommons.org/licenses/by-sa/4.0/
educationr-3733	creativecommons.org	https://creativecommons.org/licenses/by-sa/4.0