Batista, Patrick Santos, and Ubiratã Kickhöfel Alves. “Production of Vowel Duration in Minimal Pairs Ending in [s] and [z] IN English (L2) by Learners from Porto Alegre, Brazil”. Signótica 30, no. 4 (December 3, 2018): 619–646. Accessed December 6, 2025. https://revistas.ufg.br/sig/article/view/51612.