Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Langdon, J. (1997). Was England a technological backwater in the middle ages? Brill.

Chicago Citation Edition Citation

Langdon, John. Was England a Technological Backwater in the Middle Ages? Leiden/New York/Köln: Brill, 1997.

MLA Citation Edition Citation

Langdon, John. Was England a Technological Backwater in the Middle Ages? Brill, 1997.