Hashemi, L., & Thomas Krumins, B. (2006). Cambridge grammar for PET with answers: Self-study grammar reference and practice. Cambidge University Press.
Style de citation Chicago (17e éd.)Hashemi, Louise, et Barbara Thomas Krumins. Cambridge Grammar for PET with Answers: Self-study Grammar Reference and Practice. Cambridge, UK: Cambidge University Press, 2006.
Style de citation MLA (9e éd.)Hashemi, Louise, et Barbara Thomas Krumins. Cambridge Grammar for PET with Answers: Self-study Grammar Reference and Practice. Cambidge University Press, 2006.
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