North Klaus. (1997). Environmental business management: An Introduction (2nd (revised).). International Labour Office.
Chicago Style (17. basım) AtıfNorth Klaus. Environmental Business Management: An Introduction. 2nd (revised). Geneva: International Labour Office, 1997.
MLA (9th ed.) AtıfNorth Klaus. Environmental Business Management: An Introduction. 2nd (revised). International Labour Office, 1997.
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