hansen, b. (1965). marginal productivity wage theory and subsistence agriculture. the institute of national planning.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. cairo: the institute of national planning, 1965.
MLA -ийн эшлэл (9 дэх хэвлэлт)hansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. the institute of national planning, 1965.