Legal provisions for mandatory referendums at national level

Barbados
Constitution2002
http://aceproject.org/ero-en/regions/americas/BB/barbados-the-constitution-of-barbados-2012
TheRepresentation of the People Act (2007)
http://aceproject.org/ero-en/regions/americas/BB/barbados-representation-of-the-people-act-2007
Referendum Act, 2005
http://aceproject.org/ero-en/regions/americas/BB/barbados-referendum-act-2005-2012
Nostanding legislation addressing direct democracy in the legislation of the country. Thereis a legislation for ONE particular referendum that was meant to be held butwhich never actually took place.