^ The Backward Child, A Study Of The Psychology And Treatment Of Backwardness ISBN 9781117131016 (revised Feb 2026)
^Barbara Spofford MorganThe Backward Child, a Study of the Psychology and Treatment of Backwardness by Barbara Spofford Morgan (2009, Paperback)ISBN 9781117131016 (revised Mar 2016)
^Barbara Spofford Morgan (2012). The Backward Child, A Study of the Psychology and Treatment of Backwardness, BiblioLife. Indigo. ISBN 9781117131016 (revised May 2023)
^Barbara Spofford MorganThe Backward Child, A Study of the Psychology and Treatment of Backwardness, Bibliolife. Amazon. ISBN 9781117131016 (revised Mar 2016)