Hewson, John. «Review of Bates, Bretherton and Snyder, From First Words to Grammar: Individual Differences and Dissociable Mechanisms; Benson, Cummings and Greaves, Linguistics in a Systemic Perspective». Linguistica Atlantica 11 (junio 22, 1989): 135–143. Accedido mayo 18, 2024. https://journals.lib.unb.ca/index.php/la/article/view/32384.