Quorum requirements for a referendum to be valid

Cook Islands
Neither Constitution of Cook Islands sections 37(7) or41(2) (mandatory constitutional referendums) nor the standing Constitutionaland Other Polls Act 1993 set any quorums.
The Constitution of the Cook Islands is at: http://?www.?parliament.?gov.?ck/?Constitution.?pdf
The Constitutional and Other Polls Act 1993 is at:
http://?www.?paclii.?org/?ck/?legis/?num_?act/?caopa1993345/?