Dennaoui, K., Nicholls, R.J., O’Connor, M., Tarasuik, J., Kvalsvig, A., & Goldfeld, S. (2016). The English proficiency and academic language skills of Australian bilingual children during the primary school years. International Journal of Speech-Language Pathology, 18(2), 157-165.
Hoff, E. (2013). Language development (5th edn). Belmont, CA: Cengage Learning.
Saarni, C., Campos, J.J., Camras, L.A., & Witherington, D. (2007). Emotional development: Action, communication, and understanding. In N. Eisenberg, W. Damon & R.M. Lerner (Eds), Handbook of child psychology: Vol. 3: Social, emotional and personality development (6th edn, pp. 226-299). New York: Wiley.
Speech Pathology Australia (2013). The sound of speech: Preschool and school aged children. The ages and stages of children’s speech development. Melbourne: Speech Pathology Australia. Retrieved 11 November 2017 from http://www.speechpathologyaustralia.org.au/spaweb/Document_Management/Public/Fact_Sheets.aspx#anchor_3years.