APA (7th ed.) Zitazioa
PERRY, N. (2002). TEACHING THE MENTALLY RETARDED CHILD. COLUMBIA UNIVERSITY PRESS.
Chicago Style (17th ed.) Zitazioa
PERRY, N. TEACHING THE MENTALLY RETARDED CHILD. NUEVA YORK: COLUMBIA UNIVERSITY PRESS, 2002.
MLA (9th ed.) Zitazioa
PERRY, N. TEACHING THE MENTALLY RETARDED CHILD. COLUMBIA UNIVERSITY PRESS, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.