Cita APA (7th ed.)

(2005). enviromental standards and competitiveness of key economic sectors. united nations.

Cita Chicago (17th ed.)

Enviromental Standards and Competitiveness of Key Economic Sectors. new york: united nations, 2005.

Cita MLA (9th ed.)

Enviromental Standards and Competitiveness of Key Economic Sectors. united nations, 2005.

Atenció: Aquestes cites poden no estar 100% correctes.