APA (7th ed.) Citation

Constable, G. (1988). Monks, hermits and crusaders in Medieval Europe. Variorum collected studies series.

Chicago Style (17th ed.) Citation

Constable, Giles. "Monks, Hermits and Crusaders in Medieval Europe." Variorum Collected Studies Series 1988.

MLA (8th ed.) Citation

Constable, Giles. "Monks, Hermits and Crusaders in Medieval Europe." Variorum Collected Studies Series, 1988.

Warning: These citations may not always be 100% accurate.