Punch, M. (1976). Progressive retreat: A sociological study of Dartington Hall School, 1926-1957, and some of its former pupils. Cambridge University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Punch, Maurice. Progressive Retreat: A Sociological Study of Dartington Hall School, 1926-1957, and Some of Its Former Pupils. London ; New York: Cambridge University Press, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Punch, Maurice. Progressive Retreat: A Sociological Study of Dartington Hall School, 1926-1957, and Some of Its Former Pupils. Cambridge University Press, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.