Tohutoro APA (7th ed.)
Duckworth, M., & Turner, R. (2016). Business result: Upper - intermediate : Student's book (1a. ed.). Oxford University Press.
Tohutoru Kātū Chicago (17th ed.)
Duckworth, Michael, me Rebeca Turner. Business Result: Upper - Intermediate : Student's Book. 1a. ed. Buenos Aires: Oxford University Press, 2016.
Tohutoro MLA (9th ed.)
Duckworth, Michael, me Rebeca Turner. Business Result: Upper - Intermediate : Student's Book. 1a. ed. Oxford University Press, 2016.
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