BARCOMB, Michael; CARDOSO, Walcir. Rock or Lock? Gamifying an online course management system for pronunciation instruction: Focus on English /r/ and /l/. CALICO Journal, [S. l.], v. 37, n. 2, p. 127–147, 2020. DOI: 10.1558/cj.36996. Disponível em: https://journal.equinoxpub.com/Calico/article/view/17807.. Acesso em: 16 jul. 2024.