Hudson, P. (2000). History by numbers: An introduction to quantitative. Arnold.
Cita Chicago (17th ed.)Hudson, Pat. History by Numbers: An Introduction to Quantitative. London: Arnold, 2000.
Cita MLA (9th ed.)Hudson, Pat. History by Numbers: An Introduction to Quantitative. Arnold, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.