Hashemi, L. (2003). Objective PET: Workbook with answers. Cambridge, UK: Cambridge University Press.
Trích dẫn kiểu ChicagoHashemi, Louise. Objective PET: Workbook With Answers. Cambridge, UK: Cambridge University Press, 2003.
MLA CitationHashemi, Louise. Objective PET: Workbook With Answers. Cambridge, UK: Cambridge University Press, 2003.
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