References
- Hausman , Daniel M. 1992 . The Inexact and Separate Science of Economics , Cambridge and New York : Cambridge University Press .
- Mill , J. S. 1836 . “ On the definition of political economy and the method of investigation proper to it ” . In Essays on Some Unsettled Questions of Political Economy , London : J.W. Parker .
- Robbins , Lionel . 1932 . An Essay on the Nature and Significance of Economic Science , London : Macmillan .