*[https://www.nytimes.com/2018/05/17/obituaries/richard-pipes-historian-of-russia-and-reagan-aide-dies-at-94.html The New York Times- OBITUARIES- Richard Pipes, Historian of Russia and Reagan Aide, Dies at 94 ]

*[https://www.cairn.info/revue-cahiers-du-monde-russe-2018-4-page-553.htm

*[https://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/pipes-richard-edgar Encyclopedia-PIPES, RICHARD EDGAR]

*[https://alchetron.com/Richard-Pipes Alchetron-Richard Pipes ]