Cita APA

(2000).  Environmental Management system (EMS) EMS Audit and ISO 14000 Certification: Green Productivity Program.  Carl Duisberg gesellschaft.

Chicago Style Citation

 Environmental Management System (EMS) EMS Audit and ISO 14000 Certification: Green Productivity Program.  Carl Duisberg gesellschaft, 2000.

Cita MLA

 Environmental Management System (EMS) EMS Audit and ISO 14000 Certification: Green Productivity Program.  Carl Duisberg gesellschaft, 2000.

Atenció: Aquestes cites poden no estar 100% correctes.