Ludwig, O. (1908). Ludwigs Werke. Bong.
Cita Chicago (17th ed.)Ludwig, Otto. Ludwigs Werke. Berlin: Bong, 1908.
Cita MLA (8th ed.)Ludwig, Otto. Ludwigs Werke. Bong, 1908.
Atenció: Aquestes cites poden no estar 100% correctes.
Ludwig, O. (1908). Ludwigs Werke. Bong.
Cita Chicago (17th ed.)Ludwig, Otto. Ludwigs Werke. Berlin: Bong, 1908.
Cita MLA (8th ed.)Ludwig, Otto. Ludwigs Werke. Bong, 1908.