Gregory, H. Public speaking for college and career (5th.).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGregory, Hamilton. Public Speaking for College and Career. 5th.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGregory, Hamilton. Public Speaking for College and Career. 5th.
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