Lua APA (7ú heag.)

Clark, R. C. [. C. (2006). Index card games for esl (Third edition.). Pro Lingua Associates.

Lua i Stíl Chicago (17ú heag.)

Clark, Raymond C. [ Compiler]. Index Card Games for Esl. Third edition. USA: Pro Lingua Associates, 2006.

Lua MLA (9ú heag.)

Clark, Raymond C. [ Compiler]. Index Card Games for Esl. Third edition. Pro Lingua Associates, 2006.

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