From the govt.nz website at http://www.govt.nz/en/aboutnz/

THE TREATY OF WAITANGI 1840

The Treaty of Waitangi is seen as the founding document of the nation of New Zealand. It was signed in 1840 by representatives of the British Crown and Maori chiefs.

There are three versions of the treaty at: 
http://www.govt.nz/en/aboutnz/

        the English version as signed; 
        the Maori version as signed; and 
        a modern English translation of the Maori version. 

THE TREATY OF WAITANGI 1840 
[English text of the Treaty as signed]

Her Majesty Victoria Queen of the United Kingdom of Great Britain and    Ireland regarding with Her Royal Favour the Native Chiefs and Tribes of       New Zealand and anxious to protect their just Rights and Property and to       secure to them the enjoyment of Peace and Good Order has deemed it    necessary in consequence of the great number of Her Majesty's Subjects who  have already settled in New Zealand and the rapid extension of Emigration      both from Europe and Australia which is still in progress to constitute and appoint a functionary properly authorized to treat with the Aborigines of New Zealand for the recognition of Her Majesty's Sovereign authority over the whole or any part of those islands. 

Her Majesty therefore being desirous to establish a settled form of Civil Government with a view to avert the evil consequences which must result      from the absence of the necessary Laws and Institutions alike to the native population and to Her subjects has been graciously pleased to empower and to authorize "me William Hobson a Captain" in Her Majesty's Royal Navy Consul and Lieutenant Governor of such parts of New Zealand as may be or hereafter shall be ceded to Her Majesty to invite the confederated and independent Chiefs of New Zealand to concur in the following Articles and Conditions. 

ARTICLE THE FIRST
The Chiefs of the Confederation of the United Tribes of New Zealand and the separate and independent Chiefs who have not become members of the     Confederation cede to Her Majesty the Queen of England absolutely and      without reservation all the rights and powers of Sovereignty which the said Confederation or Individual Chiefs respectively exercise or possess, or may be supposed to exercise or to possess, over their respective Territories as the sole Sovereigns thereof. 

ARTICLE THE SECOND
Her Majesty the Queen of England confirms and guarantees to the Chiefs and      Tribes of New Zealand and to the respective families and individuals      thereof the full exclusive and undisturbed possession of their Lands and      Estates Forests Fisheries and other properties which they may collectively      or individually possess so long as it is their wish and desire to retain the same in their possession; but the Chiefs of the United Tribes and the individual Chiefs yield to Her Majesty the exclusive right of Preemption over such lands as the proprietors thereof may be disposed to alienate at such prices as may be agreed upon between the respective Proprietors and persons appointed by Her Majesty to treat with them in that behalf.

ARTICLE THE THIRD
In consideration thereof Her Majesty the Queen of England extends to the      Natives of New Zealand Her royal protection and imparts to them all the     Rights and Privileges of British Subjects.

[Signed] W Hobson Lieutenant Governor

Now therefore We the Chiefs of the Confederation of the United Tribes of      New Zealand being assembled in Congress at Victoria in Waitangi and We the Separate and Independent Chiefs of New Zealand claiming authority over the Tribes and Territories which are specified after our respective names, having been made fully to understand the Provisions of the foregoing    Treaty, accept and enter into the same in the full spirit and meaning       thereof in witness of which we have attached our signatures or marks at       the places and the dates respectively specified 

Done at Waitangi this Sixth day of February in the year of Our Lord one      thousand eight hundred and forty.