tinbergen, j. (1963). the appraisal of investment project. National Planning Institute.
Citazione stile Chigago Style (17a edizione)tinbergen, j. The Appraisal of Investment Project. cairo: National Planning Institute, 1963.
Citatione MLA (9a ed.)tinbergen, j. The Appraisal of Investment Project. National Planning Institute, 1963.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.