Wood, I., Williams, A., & Louise Pile. (2001). Pass Cambridge BEC vantage: : an examination preparation course. Summertown.
Cita Chicago Style (17a ed.)Wood, Ian, Anne Williams, y Louise Pile. Pass Cambridge BEC Vantage: : An Examination Preparation Course. Oxford: Summertown, 2001.
Cita MLA (9a ed.)Wood, Ian, et al. Pass Cambridge BEC Vantage: : An Examination Preparation Course. Summertown, 2001.
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