Oldfield, Dr John. «British Anti-slavery». BBC. Henta January 2, 2017. «the new legislation called for the gradual abolition of slavery. Everyone over the age of six on August 1, 1834, when the law went into effect, was required to serve an apprenticeship of four years in the case of domestics and six years in the case of field hands»
Heinegg, Paul. «Free African Americans of Virginia, North Carolina, South Carolina, Maryland and Delaware». Henta 9. august 2019., "WEAVER FAMILY: Three members of the Weaver family, probably brothers, were called "East Indians" in Lancaster County,[VA] [court records] between 1707 and 1711."; "'The indenture of Indians (Native Americans) as servants was not common in Maryland ... the indenture of East Indian servants was more common.", Retrieved 15 February 2008
Cowper, William, The task: a poem, in six books. By William Cowper, ... (London: printed for J. Johnson, 1785), p. 47. Online at "Eighteenth Century Texts Online"
Francis C. Assisi, "First Indian-American Identified: Mary Fisher, Born 1680 in Maryland", IndoLink, Quote: "Documents available from American archival sources of the colonial period now confirm the presence of indentured servants or slaves who were brought from the Indian subcontinent, via England, to work for their European American masters.", henta 20. april 2010
Wilson, Thomas D (2012). The Oglethorpe Plan: Enlightenment Design in Savannah and Beyond. Charlottesville: University of Virginia Press. s. 201–206. ISBN9780813932903. OCLC907676628.
Murrin, John M (2013). Liberty, Equality, Power: A History of the American People, Volume I: To 1877 (Concise sixth utg.). Boston, MA: Cengage Learning. s. 119. ISBN9781133947738. OCLC857231893.
MacEwen, Martin (2002). Housing, Race and Law: The British Experience. London: Routledge. s. 39. ISBN9780203032428. OCLC1086444682.
Hague, William (2008). William Wilberforce: The Life of the Great Anti-Slave Trade Campaigner. London: Harper Perennial. s. 327. ISBN9780007228867. OCLC192026996.
McGrath, Elizabeth; Massing, Jean Michel (2012). The Slave in European Art: From Renaissance Trophy to Abolitionist Emblem (på engelsk). London: Warburg Institute. ISBN9781908590435. OCLC811970449.