Business cycles a theoretical, historical and statistical analysis of the capitalist process - Schumpeter, Joseph A. 1883-1950 (MacGraw-Hill Book Company, 1939)
Electronic ed.: Québec, 2007. - Speicherung: 19.10.2007. - Adresse: http://classiques.uqac.ca/classiques/Schumpeter_joseph/business_cycles/schumpeter_business_cycles.pdf