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