International Council for Children's Play (ICCP), Conference 1966. (1966). Bibliography on Play: Section on Play for handicapped Children. Children's Play Activities.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Council for Children's Play (ICCP), Conference 1966. Bibliography on Play: Section on Play for Handicapped Children. London: Children's Play Activities, 1966.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Council for Children's Play (ICCP), Conference 1966. Bibliography on Play: Section on Play for Handicapped Children. Children's Play Activities, 1966.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.