Mostly Harmless Econometrics: An Empiricist's Companion, Joshua D. Angrist, Jörn-Steffen Pischke, 2008 (Princeton University Press)DOI: 10.1515/9781400829878 - Offers a broad yet rigorous introduction to RDD as a quasi-experimental method, covering its logic, assumptions, and practical implementation within a wider causal inference framework.
Regression Discontinuity Designs: A Guide to Practice, Guido W. Imbens and Thomas Lemieux, 2008Journal of Econometrics, Vol. 142 (Elsevier B.V.)DOI: 10.1016/j.jeconom.2007.05.004 - A highly cited paper providing a comprehensive overview of RDD, including sharp and fuzzy designs, identification assumptions, estimation strategies using local polynomial regressions, and practical considerations for applied work.
Robust Nonparametric Confidence Intervals for Regression-Discontinuity Designs, Sebastian Calonico, Matias D. Cattaneo, and Rocio Titiunik, 2014Econometrica, Vol. 82 (Wiley-Blackwell)DOI: 10.3982/ECTA11757 - Presents methods for constructing robust bias-corrected confidence intervals for RDD estimators, addressing issues like bandwidth selection and kernel choice, which are standard in modern RDD practice.