Flaschka, M. (1998). The intelligent travel company: Enhancing organizational intelligence through management systems. Verlag Paul Haupt.
Lua i Stíl Chicago (17ú heag.)Flaschka, Michael. The Intelligent Travel Company: Enhancing Organizational Intelligence Through Management Systems. Bern: Verlag Paul Haupt, 1998.
Lua MLA (8ú heag.)Flaschka, Michael. The Intelligent Travel Company: Enhancing Organizational Intelligence Through Management Systems. Verlag Paul Haupt, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.