ジョン・シリカ
Franscell, Ron (2012). The Crime Buff's Guide to Outlaw Washington, D.C.. Guilford, Conn.: Globe Pequot Press. ISBN 9780762773855. https://books.google.com/books?id=dg5eW51xl7QC&q=%22Gate+of+Heaven+Cemetery%22+%22Silver+Spring&pg=PA92
Sirica, John (April 1, 1979). To Set the Record Straight: The Break-In, the Tapes, the Conspirators, the Pardon. New York: W W Norton & Co. ISBN 0393012344. https://archive.org/details/tosetrecordstrai00siri