FRECHTLING DOUGLAS C. (2001). FORECASTING TOURISM DEMAND: METHODS AND STRATEGIES. BUTTERWORTH-HEINEMANN.
芝加哥风格引文FRECHTLING DOUGLAS C. FORECASTING TOURISM DEMAND: METHODS AND STRATEGIES. NEW DELHI: BUTTERWORTH-HEINEMANN, 2001.
MLA引文FRECHTLING DOUGLAS C. FORECASTING TOURISM DEMAND: METHODS AND STRATEGIES. BUTTERWORTH-HEINEMANN, 2001.
警告：这些引文格式不一定是100％准确.