Zemach, D. E., Wisniewska, I., & Gil Vierma, M. (2014). OpenMind: Starter level, student's book and worbook premium pack (2. edition.). London: Mcmillan.
Citación estilo ChicagoZemach, Dorothy E., Ingrid Wisniewska, y Mariela Gil Vierma. OpenMind: Starter Level, Student's Book and Worbook Premium Pack. 2. edition. London: Mcmillan, 2014.
Cita MLAZemach, Dorothy E., Ingrid Wisniewska, y Mariela Gil Vierma. OpenMind: Starter Level, Student's Book and Worbook Premium Pack. 2. edition. London: Mcmillan, 2014.
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