Hurwitz, Matt; Knowles, Chris (2008). The Complete X-Files: Behind the Series the Myths and the Movies. New York, US: Insight Editions. ISBN1-933784-72-5.
Shearman, Robert; Pearson, Lars (2009). Wanting to Believe: A Critical Guide to The X-Files, Millennium & The Lone Gunmen. Mad Norwegian Press. ISBN0-9759446-9-X.