APA (7th ed.) Citation

Sheldon, C., & Yoxon, M. (2006). Environmental management systems a step-by-step guide to implementation and maintenance / Christopher Sheldon and Mark Yoxon: A step-by-step guide to implementation and maintenance (3rd ed.). Earthscan.

Chicago Style (17th ed.) Citation

Sheldon, Christopher, and Mark Yoxon. Environmental Management Systems a Step-by-step Guide to Implementation and Maintenance / Christopher Sheldon and Mark Yoxon: A Step-by-step Guide to Implementation and Maintenance. 3rd ed. London: Earthscan, 2006.

MLA (9th ed.) Citation

Sheldon, Christopher, and Mark Yoxon. Environmental Management Systems a Step-by-step Guide to Implementation and Maintenance / Christopher Sheldon and Mark Yoxon: A Step-by-step Guide to Implementation and Maintenance. 3rd ed. Earthscan, 2006.

Warning: These citations may not always be 100% accurate.