Knoop, D., & Jones, G. P. The mediaeval mason: An economic history of English stone building in the later middle ages and early modern times. [Manchester, England]: Manchester University Press.

Knoop, Douglas, and Gwilym Peredur Jones. The Mediaeval Mason: An Economic History of English Stone Building in the Later Middle Ages and Early Modern Times. [Manchester, England]: Manchester University Press.

Knoop, Douglas, and Gwilym Peredur Jones. The Mediaeval Mason: An Economic History of English Stone Building in the Later Middle Ages and Early Modern Times. [Manchester, England]: Manchester University Press.