Aiken, H. D. (1956). The age of ideology: The 19th Century philosophers / selected, with introduction an interpretive commentary by Henry D. Aiken (1. Aufl.). The New American Library.
Lua i Stíl Chicago (17ú heag.)Aiken, Henry D. The Age of Ideology: The 19th Century Philosophers / Selected, with Introduction an Interpretive Commentary by Henry D. Aiken. 1. Aufl. New York: The New American Library, 1956.
Lua MLA (8ú heag.)Aiken, Henry D. The Age of Ideology: The 19th Century Philosophers / Selected, with Introduction an Interpretive Commentary by Henry D. Aiken. 1. Aufl. The New American Library, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.