{{sfn|Jeffers|1992|p=}}

* {{cite book | last=Jeffers | first=H. Paul | title=Profiles In Evil | date=1992 | isbn=978-0-7088-5449-5}}

<ref name="u193">{{cite book | last=Jeffers | first=H. Paul | title=Profiles In Evil | date=1992 | isbn=978-0-7088-5449-5 | page=}}</ref>