(en-US) Lawrence Van Gelder, « Brian Keith, Hardy Actor, 75; Played Dads and Desperadoes », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )
nytimes.com
(en-US) Lawrence Van Gelder, « Brian Keith, Hardy Actor, 75; Played Dads and Desperadoes », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )
Vereb, Jerome M., "Because he was a German!" : Cardinal Bea and the origins of Roman Catholic engagement in the ecumenical movement, William B. Eerdmans, (ISBN0-8028-2885-X et 978-0-8028-2885-9, OCLC846036398)