Janssen, M. C. W. (1990). Bertrand competition and Keynesian economics. Institute of Economic Research, Faculty of Economics, University of Groningen.
Chicagoスタイル(17版)引用形式Janssen, Maarten C. W. Bertrand Competition and Keynesian Economics. Groningen [Netherlands]: Institute of Economic Research, Faculty of Economics, University of Groningen, 1990.
MLA(8版)引用形式Janssen, Maarten C. W. Bertrand Competition and Keynesian Economics. Institute of Economic Research, Faculty of Economics, University of Groningen, 1990.
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