World Health Organization. (2001). Mental health: New understanding, new hope. World Health Organization.
Chicago Style aipamenaWorld Health Organization. Mental Health: New Understanding, New Hope. Geneva, Switzerland: World Health Organization, 2001.
MLA aipamenaWorld Health Organization. Mental Health: New Understanding, New Hope. World Health Organization, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.