United Nations United Nations. (1950). Formulation and Economic Appraisal of Development Projects: Book 2 (1.). Technical Assistance Administration training Institute on Economic Appraisal of Development Projects.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումUnited Nations United Nations. Formulation and Economic Appraisal of Development Projects: Book 2. 1. United Nations: Technical Assistance Administration training Institute on Economic Appraisal of Development Projects, 1950.
MLA (9րդ խմբ.) ՄեջբերումUnited Nations United Nations. Formulation and Economic Appraisal of Development Projects: Book 2. 1. Technical Assistance Administration training Institute on Economic Appraisal of Development Projects, 1950.
Զգուշացում. այս մեջբերումները միշտ չէ, որ կարող են 100% ճշգրիտ լինել.