hansen, b. (1965). marginal productivity wage theory and subsistence agriculture. the institute of national planning.
Tohutoru Kātū Chicago (17th ed.)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. cairo: the institute of national planning, 1965.
Tohutoro MLA (9th ed.)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. the institute of national planning, 1965.