PINDYCK, R. S., & Daniel L, R. (1997). Economic models and economic forecasts.-- ed.4. McGraw-Hill.

PINDYCK, Robert S., and Rubinfeld Daniel L. Economic Models and Economic Forecasts.-- Ed.4. Boston: McGraw-Hill, 1997.

PINDYCK, Robert S., and Rubinfeld Daniel L. Economic Models and Economic Forecasts.-- Ed.4. McGraw-Hill, 1997.