Παραπομπή σε μορφή APA (7η εκδ.)

Levinson, A. (1955). The mentally retarded child: A guide for parents; prepared under auspices of the Dr. Julian D. Levinson Research Foundation. George Allen & Unwin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Levinson, Abraham. The Mentally Retarded Child: A Guide for Parents; Prepared Under Auspices of the Dr. Julian D. Levinson Research Foundation. London: George Allen & Unwin, 1955.

Παραπομπή σε μορφή MLA (8th εκδ.)

Levinson, Abraham. The Mentally Retarded Child: A Guide for Parents; Prepared Under Auspices of the Dr. Julian D. Levinson Research Foundation. George Allen & Unwin, 1955.