APA (7 वां संस्करण) प्रशस्ति पत्र

Dignen, B. (2007). Fifty ways to improve your presentation skills in English: Without too much effort. Orient BlackSwan.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Hyderabad: Orient BlackSwan, 2007.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Dignen, Bob. Fifty Ways to Improve Your Presentation Skills in English: Without Too Much Effort. Orient BlackSwan, 2007.

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