Schumpeter, J. (1939). Business cycles Vol I. Mc Graw Hill.
Chicago-čujuhus (17. p.)Schumpeter, Joseph. Business Cycles Vol I. New York: Mc Graw Hill, 1939.
MLA-čujuhus (9. p.)Schumpeter, Joseph. Business Cycles Vol I. Mc Graw Hill, 1939.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.