Cita APA

Graves Cummings, M. (1992). Listen, speak, present: A step by step : presenter's workbook. México: Thomson.

Citación estilo Chicago

Graves Cummings, Martha. Listen, Speak, Present: A Step By Step : Presenter's Workbook. México: Thomson, 1992.

Cita MLA

Graves Cummings, Martha. Listen, Speak, Present: A Step By Step : Presenter's Workbook. México: Thomson, 1992.

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