Here you will find lists of useful reference books: book length (and multi-volume) bibliographies and specialized encyclopedias covering, specifically, the topics of women and gender in the Middle Ages in Europe.
American Historical Association's Guide to Historical Literature by Bibliographies in the backs of books are very useful, particularly those from recent, substantial books. But these separately published bibliographies identify major works of lasting importance.
Dictionary of the Middle Ages by 
The Oxford Dictionary of the Middle Ages (4 Volume Set) by The following are anthologies that deal specifically with the topic of women, gender and the Middle Ages. For general information on Middle Ages, please look at the LibGuides for HST 320: The Early Middle Ages and HST 330: The Later Middle Ages.
Gender and Difference in the Middle Ages by 
Heterosyncrasies Female Sexuality When Normal Wasn't by Medieval Women Writers by 
Venomous Tongues by 
Woman Defamed and Woman Defended by 
Women's Lives in Medieval Europe by 
Women, Crusading and the Holy Land in Historical Narrative by 
Women and Aristocratic Culture in the Carolingian World by 
Women in England, 1275-1525 by 
Women in Medieval Society by 
Women in the Middle Ages: An Encyclopedia by 
