MELCHIN, Paul B.; TOIVONEN, Ida. Wh-word conjunction as a test for argumenthood and obligatoriness. Proceedings of the Linguistic Society of America, [S. l.], v. 3, n. 1, p. 15:1–11, 2018. DOI: 10.3765/plsa.v3i1.4295. Disponível em: https://journals.linguisticsociety.org/proceedings/index.php/PLSA/article/view/4295.. Acesso em: 22 feb. 2026.