Ekkehard, E. (1929). Sigilla veri (Philipp Stauff's Semi-Kürschner). Bodung.
Cita Chicago (17th ed.)Ekkehard, E. Sigilla Veri (Philipp Stauff's Semi-Kürschner). Erfurt: Bodung, 1929.
Cita MLA (8th ed.)Ekkehard, E. Sigilla Veri (Philipp Stauff's Semi-Kürschner). Bodung, 1929.
Atenció: Aquestes cites poden no estar 100% correctes.