«In a Nursery, How Many Tones of Blue Are There? An Exploration Around Infants, Books, Pigments and Cirandas». Olhar de Professor 22 (diciembre 13, 2019): 1–14. Accedido mayo 30, 2026. https://revistas.uepg.br/index.php/olhardeprofessor/article/view/13765.