History Workshop Centre for Social History (Oxford, England), & Archer, L. J. (1988). Slavery and other forms of unfree labour. Routledge.
Lua i Stíl Chicago (17ú heag.)History Workshop Centre for Social History (Oxford, England), agus Léonie J. Archer. Slavery and Other Forms of Unfree Labour. London ; New York: Routledge, 1988.
Lua MLA (8ú heag.)History Workshop Centre for Social History (Oxford, England), agus Léonie J. Archer. Slavery and Other Forms of Unfree Labour. Routledge, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.