History Workshop Centre for Social History (Oxford, England), & Archer, L. J. (1988). Slavery and other forms of unfree labour. Routledge.
Chicago-viite (17. p.)History Workshop Centre for Social History (Oxford, England), ja Léonie J. Archer. Slavery and Other Forms of Unfree Labour. London ; New York: Routledge, 1988.
MLA-viite (8. p.)History Workshop Centre for Social History (Oxford, England), ja Léonie J. Archer. Slavery and Other Forms of Unfree Labour. Routledge, 1988.
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