Hartmann, K., & Veenstra, T. (2013). Cleft structures. John Benjamins Publishing Company.
Lua i Stíl Chicago (17ú heag.)Hartmann, Katharina, agus Tonjes Veenstra. Cleft Structures. Amsterdam/Philadelphia: John Benjamins Publishing Company, 2013.
Lua MLA (9ú heag.)Hartmann, Katharina, agus Tonjes Veenstra. Cleft Structures. John Benjamins Publishing Company, 2013.
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