Ehman, K. (2015). Keep it shut: What to say, how to say it, and when to say nothing at all. Zondervan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEhman, Karen. Keep It Shut: What to Say, How to Say It, and When to Say Nothing at All. Grand Rapids, Michigan: Zondervan, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEhman, Karen. Keep It Shut: What to Say, How to Say It, and When to Say Nothing at All. Zondervan, 2015.
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