I have read Thomas Baum and Ram Mudambi book “Economic and management methods for tourism and hospitality research” from 7 by 20 pages. In their book in this chapter the authors deals with the various models that can be used to estimate the economic impact of tourist spending on a local economy and found that input- output models are the most powerful and comprehensive tools that can be used the weaknesses of input-output analysis have been examined and some solutions to these weaknesses discussed. …