The source documents used for the Treaty Times 30 project are:
- The original English version of the Treaty of Waitangi as published on the NZ History website maintained by the Ministry for Culture and Heritage;
- The modern English translation* of the Māori version of the Treaty by Professor Hugh Kawharu. It is also available through the NZ History website.
*Translating from the Māori version directly would have been preferable. However the number of qualified translators able to translate directly from Māori into a language other than English was considered too low to meet the target of 30 languages.