hansen, b. (1965). marginal productivity wage theory and subsistence agriculture. the institute of national planning.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিhansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. cairo: the institute of national planning, 1965.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিhansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. the institute of national planning, 1965.