NBTA
The National Business Travel Association (NBTA). Travel management is a specialized business function that balances employee needs with corporate goals, financial and otherwise. Travel management ensures cost tracking and control, facilitates adherence to corporate travel policies, realizes savings through negotiated discounts, and serves as a valuable information center for employees and managers in times when travel is not as smooth and carefree as it used to be.
URL: http://www2.nbta.org