hansen, b. (1965). marginal productivity wage theory and subsistence agriculture. the institute of national planning.
Cytowanie według stylu Chicago (wyd. 17)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. cairo: the institute of national planning, 1965.
Cytowanie według stylu MLA (wyd. 9)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. the institute of national planning, 1965.