Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

O'Connor, Neil, e Beate Hermelin. Speech and Thought in Severe Subnormality: An Experimental Study. Oxford, New York: Pergamon Press, 1963.

Citatione MLA (9a ed.)

O'Connor, Neil, e Beate Hermelin. Speech and Thought in Severe Subnormality: An Experimental Study. Pergamon Press, 1963.