KUHRE, W. L. (1995). Iso 14001 Certification Environmental Management Preparing Effective Environmental Management Systems W. Lee. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKUHRE, W. Lee. Iso 14001 Certification Environmental Management Preparing Effective Environmental Management Systems W. Lee. Prentice-Hall, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKUHRE, W. Lee. Iso 14001 Certification Environmental Management Preparing Effective Environmental Management Systems W. Lee. Prentice-Hall, 1995.
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