Niebuhr, R. (1940). Why the Christian church is not pacifist. Student Christian Movement Press.
Citazione stile Chigago Style (17a edizione)Niebuhr, Reinhold. Why the Christian Church Is Not Pacifist. London: Student Christian Movement Press, 1940.
Citatione MLA (8a ed.)Niebuhr, Reinhold. Why the Christian Church Is Not Pacifist. Student Christian Movement Press, 1940.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.