Free economy and distribution of national income and of the increase of productivity.
MLA
de Graaff, A. Free Economy and Distribution of National Income and of the Increase of Productivity. Voorburg, 1957.
APA
de Graaff, A. (1957). Free economy and distribution of national income and of the increase of productivity. Voorburg.
Chicago
de Graaff, A. Free Economy and Distribution of National Income and of the Increase of Productivity. Voorburg, 1957.