COLEBATCH, H. K. Policy. 3rd ed. University of New South Wales, Australia, 2009. 184 p. ISBN: 978-0-335-23540-7 .
LANE, J. E. The Public Sector, Concepts, Models and Approaches. 3rd ed. Geneva: University of Geneva, 2000. 368 p. ISBN: 978-0-761-96749-1 .
STIGLITZ, J. E. Economics of the Public Sector. 3rd ed. New York: W. W. Norton & Company, 2000. 823 p. ISBN: 978-0-393-96651-0 .