APA (7 ম সংস্করণ) উদ্ধৃতি

Collier, D., Brady, H. E., & Seawright, J. Sources of leverage in causal inference: Toward an alternative view of methodology.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Collier, David, Henry E. Brady, এবং Jason Seawright. Sources of Leverage in Causal Inference: Toward an Alternative View of Methodology.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Collier, David, et al. Sources of Leverage in Causal Inference: Toward an Alternative View of Methodology.