Cita APA

Allen, G. H. 1. (1919). The wavering balance of forces. Philadelphia: George Barrie's Sons.

Citación estilo Chicago

Allen, George Henry 1876-1950. The Wavering Balance of Forces. Philadelphia: George Barrie's Sons, 1919.

Cita MLA

Allen, George Henry 1876-1950. The Wavering Balance of Forces. Philadelphia: George Barrie's Sons, 1919.