1. Adachi, M., & Trehub, S. (2012). Musical lives of infants. In G. McPherson & G. F. Welch (Eds.), The Oxford handbook of music education (pp. 229–247). Oxford University Press.
2. Baltes, M. M., & Carstensen, L. L. (2003). The process of successful aging: Selection, optimization, and compensation. In U. M. Staudinger & U. Lindenberger (Eds.), Understanding human development (pp. 81–104). Springer.
3. Brookfield, S. (1986). Understanding and facilitating adult learning. Jossey Bass.
4. Clift, S. (2012). Singing, health and wellbeing. In R. Macdonald, G. Kreutz, & L. Mitchell (Eds.), Music, health and wellbeing (pp. 113–124). Oxford: Oxford University Press.
5. Cooper, T. (2001). Adults’ perceptions of piano study: Achievements and experiences. Journal of Research in Music Education, 49(2), 156–168.