Cita APA (7th ed.)
Ball, M. J., & Müller, N. (1992). Mutation in Welsh. Routledge.
Cita Chicago (17th ed.)
Ball, Martin J., i Nicole Müller. Mutation in Welsh. London ; New York: Routledge, 1992.
Cita MLA (9th ed.)
Ball, Martin J., i Nicole Müller. Mutation in Welsh. Routledge, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.