المؤلفون: Northrup, David, author

المصدر: The Oxford History of the World, 2023.

الإتاحة: https://doi.org/10.1093/oso/9780192884022.003.0008

المؤلفون: García, Juan Carlos Moreno, author

المصدر: The Oxford World History of Empire : Volume Two: The History of Empires, 2021, ill.

الإتاحة: https://doi.org/10.1093/oso/9780197532768.003.0001

المؤلفون: Kershaw, Jane, author

المصدر: Silver, Butter, Cloth : Monetary and Social Economies in the Viking Age, 2018, ill.

الإتاحة: https://doi.org/10.1093/oso/9780198827986.003.0013

المؤلفون: Oras, Ester, author, Leimus, Ivar, author, Joosu, Lauri, author

المصدر: Silver, Butter, Cloth : Monetary and Social Economies in the Viking Age, 2018, ill.

الإتاحة: https://doi.org/10.1093/oso/9780198827986.003.0009

المؤلفون: Sawyer, Peter, author

الإتاحة: https://doi.org/10.1093/acprof:oso/9780199253937.001.0001

المؤلفون: Harvey, Sally, author

المصدر: Domesday : Book of Judgement, 2014.

الإتاحة: https://doi.org/10.1093/acprof:oso/9780199669783.003.0007

المؤلفون: Sawyer, Peter, author

المصدر: The Wealth of Anglo-Saxon England, 2013, ill.

الإتاحة: https://doi.org/10.1093/acprof:oso/9780199253937.003.0003

المؤلفون: Barron, Caroline M., author

المصدر: London in the Later Middle Ages : Government and People 1200-1500, 2004.

الإتاحة: https://doi.org/10.1093/acprof:oso/9780199257775.003.04