H. J. Lubbe

South African Language Rights Monitor 2011 / Suid-Afrikaanse Taalregtemonitor 2011

South African Language Rights Monitor 2002

South African Language Rights Monitor 2010 / Suid-Afrikaanse Taalregtemonitor 2010

South African Language Rights Monitor 2003

South African Language Rights Monitor 2004

South African Language Rights Monitor 2009