Translation (2004) Vereenvoudigde beskrywing van die begrip "kategorie". Afrikaans text availabel at: http://www.landmanwa.co.za/navles.htm English translation also available at: http://www.landmanwa.co.za/reslec.htm Edited January 19, 2016.
Translation (2004) Vereenvoudigde beskrywing van die begrip "kategorie". Afrikaans text availabel at: http://www.landmanwa.co.za/navles.htm English translation also available at: http://www.landmanwa.co.za/reslec.htm Edited January 19, 2016.