context: Ringen earned her Ph.D. in Linguistics from Indiana University in 1975, with a dissertation entitled Vowel Harmony: Theoretical Implications.
source: Ringen was co-editor of the Nordic Journal of Linguistics from 2001–2015.
reference_original: Ringen è stata co-redattrice del Nordic Journal of Linguistics dal 2001 al 2015.
reference_flipped: Ringen è stato co-redattore del Nordic Journal of Linguistics dal 2001 al 2015.