?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Wong%2C+Huey+Siew&rft.aulast=Wong&rft.aufirst=Huey+Siew&rft.date=2012&rft.title=The+Role+of+NGO+in+Promoting+Life+Long+Learning+for+Person+with+Visually+Impaired+and+Blindness&rft.genre=proceeding