APA (7e ed.) Bronvermelding

Kolassa, S., & Siemsen, E. (2014). Demand Forecasting for Managers. Business Expert Press.

Chicago (17e ed.) Bronvermelding

Kolassa, Stephan, en Enno Siemsen. Demand Forecasting for Managers. New York: Business Expert Press, 2014.

MLA (9e ed.) Bronvermelding

Kolassa, Stephan, en Enno Siemsen. Demand Forecasting for Managers. Business Expert Press, 2014.