Dyfyniad APA
Kolassa, S., & Siemsen, E. (2014). Demand Forecasting for Managers. Business Expert Press.
Dyfyniad Arddull Chicago
Kolassa, Stephan, and Enno Siemsen. Demand Forecasting for Managers. New York: Business Expert Press, 2014.
Dyfyniad MLA
Kolassa, Stephan, and Enno Siemsen. Demand Forecasting for Managers. Business Expert Press, 2014.
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