Are referendum results binding?

Constitution (03/03/1991)

http://www.sierra-leone.org/Laws/constitution1991.pdf

Article 108 [?](3) A Bill for an Act of Parliament enacting a new Constitution or altering any of the following provisions of this Constitution, that is to say? a. this section b. Chapter III, c. sections 46, 56, 72, 73, 74(2), 74(3), 84(2), 85, 87, 105, 110-119, 120, 121, 122, 123, 124, 128, 129, 131, 132, 133, 135, 136, 137, 140, 151, 156, 167, shall not be submitted to the President for his assent and shall not become law unless the Bill, after it has been passed by Parliament and in the form in which it was so passed, has, in accordance with the provisions of any law in that behalf, been submitted to and been approved at a referendum.

(4) Every person who is entitled to vote in the elections of Members of Parliament shall be entitled to vote at a referendum held for the purposes of subsection (3) and no other person may so vote; and the Bill shall not be regarded as having been approved at the referendum unless it was so approved by the votes of not less than one-half of all such persons and by not less than two-thirds of all the votes validly cast at the referendum:[?]