Silvas, A., Theodoric, o. E., & Guibert, d. G. (1999). Jutta and Hildegard: The biographical sources. Pennsylvania State University Press.
Chicago Style (17th ed.) CitationSilvas, Anna, of Echternach Theodoric, i de Gembloux Guibert. Jutta and Hildegard: The Biographical Sources. University Park, Pa.: Pennsylvania State University Press, 1999.
Cita MLASilvas, Anna, et al. Jutta and Hildegard: The Biographical Sources. Pennsylvania State University Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.