Cita APA

Butler, N. M. (1940). Why war?: Essays and addresses on war and peace. Scribner.

Citación estilo Chicago

Butler, Nicholas Murray. Why War?: Essays and Addresses on War and Peace. New York [u.a.]: Scribner, 1940.

Cita MLA

Butler, Nicholas Murray. Why War?: Essays and Addresses on War and Peace. Scribner, 1940.