3INTOSAI:Studies and Guidel ines on Environmental Auditing Product:Guidance on Conducting Audits and Activities with an Environmental Perspective,2001.
4Tom Lee. Company Auditing[M]. Van Nostrand Reinhold (UK)Co. Ltd. ,1986.
5David Flint. Philosophy and Principles of Auditing:An Introduction[M]. Macmillan Education Ltd,1988.
