Requirements for a referendum to pass

Republic of The Congo (Brazzaville)
Answer
- Mandatory referendum - simple majority
- Optional referendum - simple majority
Source
Electoral Code (24/11/2001)http://www.cesbc.org/congo/Lois/Loi%2024-2001.pdf
Article 44 :La consultation r?f?rendaire se fait au scrutin majoritaire ? un tour.