Sorokin, G. (1967). Planning in the U.S.S.R Problems of theory and organization (1.). Progress v Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Sorokin, G. Planning in the U.S.S.R Problems of Theory and Organization. 1. Moscow: Progress v Publishers, 1967.
Παραπομπή σε μορφή MLA (9th εκδ.)Sorokin, G. Planning in the U.S.S.R Problems of Theory and Organization. 1. Progress v Publishers, 1967.