North Klaus. (1997). Environmental business management: An Introduction (2nd (revised).). International Labour Office.
芝加哥风格引文North Klaus. Environmental Business Management: An Introduction. 2nd (revised). Geneva: International Labour Office, 1997.
MLA引文North Klaus. Environmental Business Management: An Introduction. 2nd (revised). International Labour Office, 1997.
警告：这些引文格式不一定是100％准确.