Langford, P. (1987). Concept development in the primary school. Croom Helm.
シカゴスタイル引用形Langford, Peter. Concept Development in the Primary School. London: Croom Helm, 1987.
MLA引用形式Langford, Peter. Concept Development in the Primary School. Croom Helm, 1987.
警告: この引用は必ずしも正確ではありません.