Παραπομπή σε μορφή APA (7η εκδ.)

O'Brien, J. (1986). Discovering community: Learning from innovations in services to people with mental retardation. s.n..

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Brien, John. Discovering Community: Learning from Innovations in Services to People with Mental Retardation. [Massachusetts: s.n., 1986.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Brien, John. Discovering Community: Learning from Innovations in Services to People with Mental Retardation. s.n., 1986.