Tepper. Progressive Minds, Conservative Politics. State University of New York Press.
Chicago-viite (17. p.)Tepper. Progressive Minds, Conservative Politics. State University of New York Press.
MLA-viite (9. p.)Tepper. Progressive Minds, Conservative Politics. State University of New York Press.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.