Cita APA (7a ed.)
(2012). Event sustainability management systems - Requirements with guidance for use. ISO 20121: 2012-06-15. ISO.
Cita Chicago Style (17a ed.)
Event Sustainability Management Systems - Requirements with Guidance for Use. ISO 20121: 2012-06-15. Geneva: ISO, 2012.
Cita MLA (9a ed.)
Event Sustainability Management Systems - Requirements with Guidance for Use. ISO 20121: 2012-06-15. ISO, 2012.
Precaución: Estas citas no son 100% exactas.