Fowler Kenneth. Medieval Mercenaries. Volume 1: The Great Companies

Blackwell, 2001. — 404 p.This is the first book devoted exclusively to the history of ′The Great Companies′, an assembly of mercenaries drawn from different European countries who came together to fight in the second half of the 14th century, sometimes in the employ of kings, the pope, princes or city republics, but frequently fighting on their own account.