Schellenberger, B. (1982). Ludwig Wolker: Barbara Schellenberger. Aschendorff.
Cita Chicago (17th ed.)Schellenberger, Barbara. Ludwig Wolker: Barbara Schellenberger. Münster: Aschendorff, 1982.
Cita MLA (8th ed.)Schellenberger, Barbara. Ludwig Wolker: Barbara Schellenberger. Aschendorff, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.