Brooks, I. (1997). The business environment: Challenges and changes. Prentice Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrooks, Ian. The Business Environment: Challenges and Changes. London: Prentice Hall, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrooks, Ian. The Business Environment: Challenges and Changes. Prentice Hall, 1997.
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