APA aipamena

Krashen, S. D. (1985). The input hypothesis: Issues and implications. Longman.

Chicago Style aipamena

Krashen, Stephen D. The Input Hypothesis: Issues and Implications. London ; New York: Longman, 1985.

MLA aipamena

Krashen, Stephen D. The Input Hypothesis: Issues and Implications. Longman, 1985.