Cita APA (7a ed.)

O'Connor, N., & Hermelin, B. (1963). Speech and thought in severe subnormality; an experimental study. Macmillan.

Cita Chicago Style (17a ed.)

O'Connor, N., y Beate Hermelin. Speech and Thought in Severe Subnormality; an Experimental Study. New York: Macmillan, 1963.

Cita MLA (9a ed.)

O'Connor, N., y Beate Hermelin. Speech and Thought in Severe Subnormality; an Experimental Study. Macmillan, 1963.