APA način citiranja (7. izdanje)
Kolassa, S., & Siemsen, E. (2016). Demand forecasting for managers (First edition.). Business Expert Press.
Čikaški stil citiranja (17. izdanje)
Kolassa, Stephan, i Enno Siemsen. Demand Forecasting for Managers. First edition. New York, New York (222 East 46th Street, New York, NY 10017): Business Expert Press, 2016.
MLA način citiranja (9. izdanje)
Kolassa, Stephan, i Enno Siemsen. Demand Forecasting for Managers. First edition. Business Expert Press, 2016.
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