5Markku Suksi. Bringing in the People: A Comparison of Constitutional Forms and Practices of the Referendum. Boston; Martinus Nijhoft, 1993.
6David Butler and Austin Ranney (eds.). Referendums around the world: The Growing Use of Direct Democracy Washington, D. C.: American Enterprise Institute Press,1994.
7John Howard Clinebell & Jim Thomson. Sovereignty and Self-determination : The Right of Native Americans unders International Law, Buffalo Law Review, Vol. 27, 1978.
8S. J. Anaya. Self-Determination as a Collective Human Right under Contemporary International Law, in P. Aikio & M. Scheinin eds. , Operationalizing the Right of Indigenous Peoples to Self-Determination, Abo Akademi University, 2000.
9Oppenheim-Lanterpacht. International Law, London Publishing, Vol. Ⅰ, 7^th, 1955.
10Charles. Rousseau. Droit international public, 2, Paris: Sirey, 1974.
