Krashen Stephen D. (1988). Second language acquisition and second language learning. Prentice-Hall.
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Chicago-čujuhus (17. p.)
Krashen Stephen D. Second Language Acquisition and Second Language Learning. New York: Prentice-Hall, 1988.
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MLA-čujuhus (9. p.)
Krashen Stephen D. Second Language Acquisition and Second Language Learning. Prentice-Hall, 1988.
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