Dignen, B. (2007). Presentation skills in English: ...without too much effort ! Summertown Publishing.
Style de citation Chicago (17e éd.)Dignen, Bob. Presentation Skills in English: ...without Too Much Effort ! Oxford: Summertown Publishing, 2007.
Style de citation MLA (8e éd.)Dignen, Bob. Presentation Skills in English: ...without Too Much Effort ! Summertown Publishing, 2007.
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