(2013). Ruhr-Wort.
Cita Chicago (17th ed.)Ruhr-Wort. Essen, 2013.
Cita MLA (8th ed.)Ruhr-Wort. 2013.
Atenció: Aquestes cites poden no estar 100% correctes.
(2013). Ruhr-Wort.
Cita Chicago (17th ed.)Ruhr-Wort. Essen, 2013.
Cita MLA (8th ed.)Ruhr-Wort. 2013.