Helga R. Gudmundsdottir, Beynon, C., Ludke, K., & Cohen, A. J. (2022). The Routledge companion to interdisciplinary studies in singing. Routledge.

Helga R. Gudmundsdottir, Carol Beynon, Karen Ludke, and Annabel J. Cohen. The Routledge Companion to Interdisciplinary Studies in Singing. London: Routledge, 2022.

Helga R. Gudmundsdottir, et al. The Routledge Companion to Interdisciplinary Studies in Singing. Routledge, 2022.