Singleton, D., & Ryan, L. (2004). Language acquisition: The age factor (2nd ed.). Multilingual Matters Ltd..
Chicagoスタイル(17版)引用形式Singleton, David, , Lisa Ryan. Language Acquisition: The Age Factor. 2nd ed. Clevedon: Multilingual Matters Ltd., 2004.
MLA(9版)引用形式Singleton, David, , Lisa Ryan. Language Acquisition: The Age Factor. 2nd ed. Multilingual Matters Ltd., 2004.
警告: この引用は必ずしも正確ではありません.