Bertram, T., & Pascal, C. (2016). Early Childhood Policies and Systems in Eight Countries: Findings from IEA's Early Childhood Education Study. Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-39847-1
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bertram, Tony, و Chris Pascal. Early Childhood Policies and Systems in Eight Countries: Findings from IEA's Early Childhood Education Study. Cham: Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-39847-1.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Bertram, Tony, و Chris Pascal. Early Childhood Policies and Systems in Eight Countries: Findings from IEA's Early Childhood Education Study. Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-39847-1.