eleish, g. (1962). an introduction to the input- output model. the institute of national planning.
Παραπομπή σε μορφή Chicago (17η εκδ.)eleish, g. An Introduction to the Input- Output Model. cairo: the institute of national planning, 1962.
Παραπομπή σε μορφή MLA (9th εκδ.)eleish, g. An Introduction to the Input- Output Model. the institute of national planning, 1962.