Issues of sub-national referendums regulated at the national level

Antigua and Barbuda
Answer
None
Source
The Antigua andBarbuda Constitution Order 1981
http://aceproject.org/ero-en/regions/americas/AG/Antigua%20and%20Barbuda%20-%20Constitution
The Referendum Act1997
http://aceproject.org/ero-en/regions/americas/AG/antigua-and-barbuda-the-referendum-act
Comment
No provision was found in this regard