(1949). Die Wirtschaft Westberlins. Duncker & Humblot.
Cita Chicago (17th ed.)Die Wirtschaft Westberlins. Berlin [u.a.]: Duncker & Humblot, 1949.
Cita MLA (8th ed.)Die Wirtschaft Westberlins. Duncker & Humblot, 1949.
Atenció: Aquestes cites poden no estar 100% correctes.