Srein, Z. (1976). Planning the Volume of Investment the Long-run Period. The Institute of National Planning.
Cita Chicago (17th ed.)Srein, Zdenek. Planning the Volume of Investment the Long-run Period. Cairo: The Institute of National Planning, 1976.
Cita MLA (9th ed.)Srein, Zdenek. Planning the Volume of Investment the Long-run Period. The Institute of National Planning, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.