Duncan, J., & Lockwood, M. (2008). Learning through play: A work-based approach for the early years. Continuum International Pub. Group.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Duncan, Jacqueline, و Madelaine Lockwood. Learning Through Play: A Work-based Approach for the Early Years. London: Continuum International Pub. Group, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Duncan, Jacqueline, و Madelaine Lockwood. Learning Through Play: A Work-based Approach for the Early Years. Continuum International Pub. Group, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.