Collier, D., Brady, H. E., & Seawright, J. Sources of leverage in causal inference: Toward an alternative view of methodology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCollier, David, Henry E. Brady, और Jason Seawright. Sources of Leverage in Causal Inference: Toward an Alternative View of Methodology.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCollier, David, et al. Sources of Leverage in Causal Inference: Toward an Alternative View of Methodology.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.