* [http://www.amazon.com/Environmental-Protection-Agency-Questions-Clinton/dp/book-citations/0195086732/ref=sid_dp_av?ie=UTF8&citeType=cited#cited additional books] | * [http://www.amazon.com/Environmental-Protection-Agency-Questions-Clinton/dp/book-citations/0195086732/ref=sid_dp_av?ie=UTF8&citeType=cited#cited additional books] |