University of London, Institute of Historical Research. (1987). Historical Research. Basil Blackwell.
Chicago-referens (17:e uppl.)University of London, Institute of Historical Research. Historical Research. Oxford, Inglaterra: Basil Blackwell, 1987.
MLA-referens (8:e uppl.)University of London, Institute of Historical Research. Historical Research. Basil Blackwell, 1987.
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