Theobald, T. (2013). Develop your presentation skills (Second edition.). Kogan Page Ltd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTheobald, Theo. Develop Your Presentation Skills. Second edition. Philadelphia, PA: Kogan Page Ltd, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTheobald, Theo. Develop Your Presentation Skills. Second edition. Kogan Page Ltd, 2013.
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