Cita APA (7a ed.)

Sheldon, C. (1997). ISO 14001 and beyond: Environmental management systems in the real world. Greenleaf.

Cita Chicago Style (17a ed.)

Sheldon, Christopher. ISO 14001 and Beyond: Environmental Management Systems in the Real World. Sheffield, England: Greenleaf, 1997.

Cita MLA (9a ed.)

Sheldon, Christopher. ISO 14001 and Beyond: Environmental Management Systems in the Real World. Greenleaf, 1997.