APA (7th ed.) Citation

Aiken, H. D. (1956). The age of ideology: The 19th Century Philosophers. New American Library.

Chicago Style (17th ed.) Citation

Aiken, Henry D. The Age of Ideology: The 19th Century Philosophers. New American Library, 1956.

MLA (8th ed.) Citation

Aiken, Henry D. The Age of Ideology: The 19th Century Philosophers. New American Library, 1956.

Warning: These citations may not always be 100% accurate.