Books
K.J. Holsti et al, Why Nations Realign: Foreign Policy Restructuring in the Postwar World, George Allen & Unwin (Publishers) Ltd, London, UK, 1982.( Pages 21-47)
Leo E. Rose, The Politics of Bhutan, Cornell University Press, London, UK, 1977.
B.J. Hasrat, The History of Bhutan Land of the Peaceful Dragon, Education Department, Royal Government of Bhutan, Thimphu, Bhutan, 1980.
T. Mathou, Bhutan: Aspects of Culture and Development, copyright: Michael Aris & Michael Hutt, 1994, U.K.
Centre for Bhutan Studies, Journal of Bhutan Studies, copyright: Centre for Bhutan Studies, 1999, Thimphu Bhutan.
Ministry of Planning, Eight Five Year Plan(1997-2002): Main Document, 1996, Thimphu Bhutan.
World Bank, Bhutan: Country Economic Memorandum, 1996
Websites: