Nellis, J. G., Parker, D., & Parker, D. 1. S. 2. (1997). The essence of business economics (2nd ed.). London: Prentice-Hall.
Παραπομπή Chicago StyleNellis, Joseph G., David Parker, and David 1949 Sept. 28- Parker. The Essence of Business Economics. 2nd ed. London: Prentice-Hall, 1997.
Παραπομπή MLANellis, Joseph G., David Parker, and David 1949 Sept. 28- Parker. The Essence of Business Economics. 2nd ed. London: Prentice-Hall, 1997.
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