− | [Causal Inference in Statistics: A Primer原著勘误版本](http://bayes.cs.ucla.edu/PRIMER/pearl-etal-2016-primer-errata-pages-april2021.pdf) | + | * [http://bayes.cs.ucla.edu/PRIMER/pearl-etal-2016-primer-errata-pages-april2021.pdf 《Causal Inference in Statistics: A Primer》原著勘误版本] |