Charles Negy, Christopher J. Ferguson (Автор) Predicting Radical Progressive Ideology (RPI): Preliminary Findings from an Exploratory Study PDF (Английский)
Anonymous (Автор) Review of Negy & Ferguson (2025): “Predicting Radical Progressive Ideology (RPI) from Personality and Attitudinal Variables” PDF (Английский)
Sonia Yanovsky (Автор) The (De)merits of Radical Progressivism: Commentary on Negy & Ferguson (2025) PDF (Английский)