Galenson,Walter, & Harviy Leibenstein. (1955). Investment Criteria, Productivity and Economic Development. Quarterly Journal of Eonomics.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումGalenson,Walter, and Harviy Leibenstein. Investment Criteria, Productivity and Economic Development. New Jersey: Quarterly Journal of Eonomics, 1955.
MLA (9րդ խմբ.) ՄեջբերումGalenson,Walter, and Harviy Leibenstein. Investment Criteria, Productivity and Economic Development. Quarterly Journal of Eonomics, 1955.