1. Emotional development: Action, communication and understanding;Saarni,1998
2. The functions of emotions in early infant communication and development.;Trevarthan,1993
3. Performance practice I music after 1600, Chapter XV;Brown,1990
4. Using recitative to teach expressive singing: an old idea made new;Pilch;J Sing,2018
5. Professional Technique for the Repetiteur;Montgomery,2019