Παραπομπή σε μορφή APA (7η εκδ.)

Ricketts, P. (2010). High-ranking widows in medieval Iceland and Yorkshire: Property, pwer, marriage ad identity in the twelfth and thirteenth centuries. Brill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ricketts, Philadelphia. High-ranking Widows in Medieval Iceland and Yorkshire: Property, Pwer, Marriage Ad Identity in the Twelfth and Thirteenth Centuries. Leiden: Brill, 2010.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ricketts, Philadelphia. High-ranking Widows in Medieval Iceland and Yorkshire: Property, Pwer, Marriage Ad Identity in the Twelfth and Thirteenth Centuries. Brill, 2010.