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Painter, Nell Irvin; Berlin, Ira (2000). «Many Thousands Gone: The First Two Centuries of Slavery in North America». African American Review. 34 (3). 515 páginas. ISSN1062-4783. JSTOR2901390. doi:10.2307/2901390
Rodney, Walter (1966). «African Slavery and Other Forms of Social Oppression on the Upper Guinea Coast in the Context of the Atlantic Slave-Trade». The Journal of African History. 7 (3): 431–443. JSTOR180112. doi:10.1017/s0021853700006514
«Pledges. Delivery to Create a Future Pledge. Assignment of Debt to One Person and of Pledge to Another». Harvard Law Review. 35 (3). 345 páginas. 1922. ISSN0017-811X. JSTOR1329636. doi:10.2307/1329636
Johnson, Douglas H. (1989). «The Structure of a Legacy: Military Slavery in Northeast Africa». Ethnohistory. 36 (1): 72–88. JSTOR482742. doi:10.2307/482742
Wylie, Kenneth C. (1969). «Innovation and Change in Mende Chieftaincy 1880–1896». The Journal of African History. 10 (2): 295–308. JSTOR179516. doi:10.1017/s0021853700009531
Painter, Nell Irvin; Berlin, Ira (2000). «Many Thousands Gone: The First Two Centuries of Slavery in North America». African American Review. 34 (3). 515 páginas. ISSN1062-4783. JSTOR2901390. doi:10.2307/2901390
«Pledges. Delivery to Create a Future Pledge. Assignment of Debt to One Person and of Pledge to Another». Harvard Law Review. 35 (3). 345 páginas. 1922. ISSN0017-811X. JSTOR1329636. doi:10.2307/1329636