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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रlinkedin.com (Firm), Elizabeth Lotardo, और Lisa Earle McLeod. Advanced Business Development: Communication and Negotiation. Carpenteria, CA: linkedin.com, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रlinkedin.com (Firm), et al. Advanced Business Development: Communication and Negotiation. linkedin.com, 2018.
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