Flaschka, M. (1998). The intelligent travel company: Enhancing organizational intelligence through management systems. Verlag Paul Haupt.
Chicago-viite (17. p.)Flaschka, Michael. The Intelligent Travel Company: Enhancing Organizational Intelligence Through Management Systems. Bern: Verlag Paul Haupt, 1998.
MLA-viite (8. p.)Flaschka, Michael. The Intelligent Travel Company: Enhancing Organizational Intelligence Through Management Systems. Verlag Paul Haupt, 1998.
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