Lua APA (7ú heag.)
Fortescue, M. D. (1980). A discourse production model for 'twenty questions'. J. Benjamins.
Lua i Stíl Chicago (17ú heag.)
Fortescue, Michael D. A Discourse Production Model for 'Twenty Questions'. Amsterdam: J. Benjamins, 1980.
Lua MLA (9ú heag.)
Fortescue, Michael D. A Discourse Production Model for 'Twenty Questions'. J. Benjamins, 1980.
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