(1937). Volk an der Grenze. Diederichs.
Cita Chicago (17th ed.)Volk an Der Grenze. Jena: Diederichs, 1937.
Cita MLA (8th ed.)Volk an Der Grenze. Diederichs, 1937.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)