Douglas, E. S., Girimonti, S., & Samuel, J. (2019). C1 and now you're speaking. Editorial Tébar Flores.
Tohutoru Kātū ChicagoDouglas, Elisabeth S., Silvia Girimonti, me Julia Samuel. C1 and Now You're Speaking. Madrid: Editorial Tébar Flores, 2019.
Tohutoro MLADouglas, Elisabeth S., et al. C1 and Now You're Speaking. Editorial Tébar Flores, 2019.
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