Cita APA (7th ed.)

Ferzoco, G., Kienzle, B., & Stoudt, D. (2013). A Companion to Hildegard of Bingen. BRILL.

Cita Chicago (17th ed.)

Ferzoco, George, Beverly Kienzle, i Debra Stoudt. A Companion to Hildegard of Bingen. Leiden: BRILL, 2013.

Cita MLA (9th ed.)

Ferzoco, George, et al. A Companion to Hildegard of Bingen. BRILL, 2013.