1. Adolphs, S., & Knight, D. (2010). Building a Spoken Corpus: What Are the Basics? In A. O’Keeffe & M. McCarthy (Eds.), The Routledge Handbook of Corpus Linguistics (pp. 38–52). Routledge.
2. Aijmer, K. (2020). Spoken Corpora. In S. Adolphs & D. Knight (Eds.), Routledge Handbook of English Language and Digital Humanities (pp. 5–25). Routledge.
3. Bible Society. (1997). Challenge to Change: Results of the 1995 Welsh Churches Survey. British and Foreign Bible Society.
4. Crowdy, S. (1993). Spoken Corpus Design. Literary and Linguistic Computing, 8, 259–265.
5. Hatton, L. (1988). The Development of the Nasal Mutation in the Speech of School-Children. In M. Ball (Ed.), The Use of Welsh. Multilingual Matters.