Cita APA (7th ed.)

Beveridge, M., Conti-Ramsden, G., & Leudar, I. (1989). Language and communication in people with learning disabilities. Routledge.

Cita Chicago (17th ed.)

Beveridge, Michael, Gina Conti-Ramsden, i Ivan Leudar. Language and Communication in People with Learning Disabilities. London: Routledge, 1989.

Cita MLA (9th ed.)

Beveridge, Michael, et al. Language and Communication in People with Learning Disabilities. Routledge, 1989.