APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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