Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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