Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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