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semanticscholar.org
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Hazen, Kirk (2014). "A new role for an ancient variable in Appalachia: Paradigm leveling and standardization in West Virginia". Language Variation and Change. 26 (1): 77–102. doi:10.1017/S0954394513000215. ISSN0954-3945. S2CID144643510.
Dammel, Antje; Nowak, Jessica; Schmuck, Mirjam (2010). "Strong-Verb Paradigm Leveling in Four Germanic Languages: A Category Frequency Approach". Journal of Germanic Linguistics. 22 (4): 337–359. doi:10.1017/S1470542710000097. ISSN1470-5427. S2CID170759169.
sil.org
glossary.sil.org
"Paradigm". SIL Glossary of Linguistic Terms. 2015-12-03. Retrieved 2019-05-09.
Hazen, Kirk (2014). "A new role for an ancient variable in Appalachia: Paradigm leveling and standardization in West Virginia". Language Variation and Change. 26 (1): 77–102. doi:10.1017/S0954394513000215. ISSN0954-3945. S2CID144643510.
Dammel, Antje; Nowak, Jessica; Schmuck, Mirjam (2010). "Strong-Verb Paradigm Leveling in Four Germanic Languages: A Category Frequency Approach". Journal of Germanic Linguistics. 22 (4): 337–359. doi:10.1017/S1470542710000097. ISSN1470-5427. S2CID170759169.