APA

Behn S., . (1929). The eternal magnet-a history of philosophy. New York: The Devin Adair Company.

Chicago

Behn Siegfried, . 1929. The eternal magnet-a history of philosophy. New York: The Devin Adair Company.

Harvard

Behn S., . (1929). The eternal magnet-a history of philosophy. New York: The Devin Adair Company.

MLA

Behn Siegfried, . The eternal magnet-a history of philosophy. New York: The Devin Adair Company. 1929.