References
- Arnold , R. 1998 . Economics, , 4th ed. , Cincinnati, Ohio : South-Western .
- Case , K. E. and Fair , R. C. 1996 . Principles of economics, , 4th ed. , New Jersey : Prentice-Hall .
- Duff , C. 1998 . Gingrich enters Social Security debate . Wall Street Journal , : A2 April 2
- Eisner , R. 1994 . The misunderstood economy: What counts and how to count it , Boston : Harvard Business School Press .
- Eisner , R. 1998 . Must we save for our grandchildren? . Wall Street Journal , : A18 June 3
- Gwartney , J. D. and Stroup , R. L. 1997 . Economics: Private and public choice, , 8th ed. , Fort Worth, Tex. : Dryden .
- Mankiw , N. G. 1998 . Principles of economics , Fort Worth, Tex. : Dryden .
- McConnell , C. R. and Brue , S. L. 1999 . Economics: Principles, practices, and policies, , 14th ed. , New York : McGraw-Hill .
- Stiglitz , J. E. 1997 . Economics, , 2nd ed. , New York : W. W. Norton .
- Tucker , I. B. 1997 . Economics for today , Cincinnati, Ohio : South-Western .