# The Rule of Four

> novel by Ian Caldwell and Dustin Thomason

**Wikidata**: [Q2321357](https://www.wikidata.org/wiki/Q2321357)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/The_Rule_of_Four)  
**Source**: https://4ort.xyz/entity/the-rule-of-four


## References

1. Freebase Data Dumps. 2013
2. Goodreads