Tohutoro APA (7th ed.)
Ball, M. J., & Müller, N. (1992). Mutation in Welsh. Routledge.
Tohutoru Kātū Chicago (17th ed.)
Ball, Martin J., me Nicole Müller. Mutation in Welsh. London ; New York: Routledge, 1992.
Tohutoro MLA (9th ed.)
Ball, Martin J., me Nicole Müller. Mutation in Welsh. Routledge, 1992.
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