Legal provisions for mandatory referendums at national level

South Africa
Answer
No
Source
Constitution (1996)http://www.info.gov.za/documents/constitution/1996/index.htm
Electoral Commission Act (Act 51 of 1998)http://www.elections.org.za/content/WorkArea/DownloadAsset.aspx?id=987
Comment
There are no provisions for mandatory referendums in the legislation of the country