Lua APA (7ú heag.)
Grenfell, M., & Harris, V. (1999). Modern languages and learning strategies: In theory and practice. Routledge.
Lua i Stíl Chicago (17ú heag.)
Grenfell, Michael, agus Vee Harris. Modern Languages and Learning Strategies: In Theory and Practice. London ; New York: Routledge, 1999.
Lua MLA (9ú heag.)
Grenfell, Michael, agus Vee Harris. Modern Languages and Learning Strategies: In Theory and Practice. Routledge, 1999.
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