Roberts, M. J. (1995). An empirical model of sunk costs and the decision to export. International Trade Division, International Dept., The World Bank.
Citazione stile Chigago Style (17a edizione)Roberts, Mark J. An Empirical Model of Sunk Costs and the Decision to Export. Washington, D.C: International Trade Division, International Dept., The World Bank, 1995.
Citatione MLA (9a ed.)Roberts, Mark J. An Empirical Model of Sunk Costs and the Decision to Export. International Trade Division, International Dept., The World Bank, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.