APA (7th ed.) Citation
Angrist, J. D., & Krueger, A. B. (2001). Instrumental variables and the search for identification: From supply and demand to natural experiments. National Bureau of Economic Research.
Chicago Style (17th ed.) Citation
Angrist, Joshua David, and Alan B. Krueger. Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments. Cambridge, MA: National Bureau of Economic Research, 2001.
MLA (9th ed.) Citation
Angrist, Joshua David, and Alan B. Krueger. Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments. National Bureau of Economic Research, 2001.
Warning: These citations may not always be 100% accurate.