Citazione APA

Silvas, A., Theodoric, o. E., & Guibert, d. G. (1999). Jutta and Hildegard: The biographical sources. Pennsylvania State University Press.

Stile di citazione Chicago

Silvas, Anna, of Echternach Theodoric, e de Gembloux Guibert. Jutta and Hildegard: The Biographical Sources. University Park, Pa.: Pennsylvania State University Press, 1999.

Citazione MLA

Silvas, Anna, et al. Jutta and Hildegard: The Biographical Sources. Pennsylvania State University Press, 1999.