1. Process-Tracing Methods
2. Land and lineage in China: A study of T'ung-Ch'eng County;Hilary J Beattie;the Ming and Ch'ing Dynasties,1979
3. Process tracing and causal inference;Andrew Bennett;Rethinking social inquiry: Diverse tools, shared standards,2010
4. Disciplining our conjectures: Systematizing process tracing with Bayesian analysis;Process tracing: From metaphor to analytic tool,2015