Sorokin, G. (1967). Planning in the U.S.S.R.: Problems of theory. Progress Pub.
Cita Chicago (17th ed.)Sorokin, G. Planning in the U.S.S.R.: Problems of Theory. Moscow: Progress Pub, 1967.
Cita MLA (9th ed.)Sorokin, G. Planning in the U.S.S.R.: Problems of Theory. Progress Pub, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.