website=https://nlrc.msu.edu https://nlrc.msu.edu
"The Center for Advanced Research on Language Acquisition (CARLA)". carla.umn.edu/lctl/db/index.php. Retrieved 2022-10-10. https://carla.umn.edu/lctl/db/
"The Center for Advanced Research on Language Acquisition (CARLA): Less Commonly Taught Languages". carla.umn.edu. Retrieved 2021-10-25. https://carla.umn.edu/lctl/resources/listservs.html