APA (7th ed.) Citation

Aiken, A. (1971). That which is: A book on the Absolute (Rev. (ed.).). Hillier Press.

Chicago Style (17th ed.) Citation

Aiken, Alfred. That Which Is: A Book on the Absolute. Rev. (ed.). New York: Hillier Press, 1971.

MLA (9th ed.) Citation

Aiken, Alfred. That Which Is: A Book on the Absolute. Rev. (ed.). Hillier Press, 1971.