Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

O'Connor, N., i Beate Hermelin. Speech and Thought in Severe Subnormality: An Experimental Study. Macmillan, 1963.