Chris Quintana, «The Real Free-Speech Crisis Is Professors Being Disciplined for Liberal Views, a Scholar Finds», The Chronicle of Higher Education, (lire en ligne, consulté le )
(en-US) John Tierney, «Social Scientist Sees Bias Within», The New York Times, (ISSN0362-4331, lire en ligne, consulté le )
(en-US) Douglas Belkin, «Colleges Pledge Tolerance for Diverse Opinions, But Skeptics Remain», Wall Street Journal, (ISSN0099-9660, lire en ligne, consulté le )
(en-US) Douglas Belkin, «Colleges Pledge Tolerance for Diverse Opinions, But Skeptics Remain», Wall Street Journal, (ISSN0099-9660, lire en ligne, consulté le )