(1917). Was kostet der Krieg?: Was ist erreicht? [s.n.].
Citazione stile Chigago Style (17a edizione)Was Kostet Der Krieg?: Was Ist Erreicht? Berlin: [s.n.], 1917.
Citatione MLA (9a ed.)Was Kostet Der Krieg?: Was Ist Erreicht? [s.n.], 1917.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.