Krashen, S. D. (1985). The input hypothesis: Issues and implications. Longman.
Chicagoスタイル(17版)引用形式Krashen, Stephen D. The Input Hypothesis: Issues and Implications. London ; New York: Longman, 1985.
MLA(8版)引用形式Krashen, Stephen D. The Input Hypothesis: Issues and Implications. Longman, 1985.
警告: この引用は必ずしも正確ではありません.