World Health Organization. (2013). International perspectives on spinal cord injury. World Health Organization.
Chicago Style (17th ed.) ZitazioaWorld Health Organization. International Perspectives on Spinal Cord Injury. Geneva, Switzerland: World Health Organization, 2013.
MLA (9th ed.) ZitazioaWorld Health Organization. International Perspectives on Spinal Cord Injury. World Health Organization, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.