Kaleck, M. (1969). Studies in the Theory of Business Cycles 1933-1939. Polish scientific publishers.
Cita Chicago (17th ed.)Kaleck, Michal. Studies in the Theory of Business Cycles 1933-1939. Poland: Polish scientific publishers, 1969.
Cita MLA (9th ed.)Kaleck, Michal. Studies in the Theory of Business Cycles 1933-1939. Polish scientific publishers, 1969.