APA-viite (7. p.)

Postan, M. M. (1972). The medieval economy and society: An economic history of Britain in the Middle Ages. Penguin Books.

Chicago-viite (17. p.)

Postan, M. M. The Medieval Economy and Society: An Economic History of Britain in the Middle Ages. London: Penguin Books, 1972.

MLA-viite (8. p.)

Postan, M. M. The Medieval Economy and Society: An Economic History of Britain in the Middle Ages. Penguin Books, 1972.