APA-referens (7:e uppl.)
Ricketts, P. (2010). High-ranking widows in medieval Iceland and Yorkshire: Property, power, marriage and identity in the twelfth and thirteenth centuries. Brill.
Chicago-referens (17:e uppl.)
Ricketts, Philadelphia. High-ranking Widows in Medieval Iceland and Yorkshire: Property, Power, Marriage and Identity in the Twelfth and Thirteenth Centuries. Leiden, The Netherlands ; Boston: Brill, 2010.
MLA-referens (9:e uppl.)
Ricketts, Philadelphia. High-ranking Widows in Medieval Iceland and Yorkshire: Property, Power, Marriage and Identity in the Twelfth and Thirteenth Centuries. Brill, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.