H. Johnston, Liberia, The Geographical Journal, vol.26, issue.2, pp.131-151, 1905.
DOI : 10.2307/1776207

J. Ashmum, History of the American Colony in Liberia , From December 1821 to 1823, p.1826

F. Douglas, Mémoire d'un esclave américain, Librairie François Maspero, issue.1

C. Foster and I. , The Colonization of Free Negroes, in Liberia, 1816-1835, The Journal of Negro History, vol.38, issue.1, pp.41-66, 1953.
DOI : 10.2307/2715813

S. Henry-noble, «The Formation of the American Colonization Society», The Journal of Negro History, vol.2, issue.3, pp.209-228, 1917.

. «american-colonization and . Society, Encyclopedia of Immigration»

B. Felix, «American Colonization Society (1816-1964)». Black Past.org, http://www.blackpast.org/?q=aah/american-colonization-society, 1816.

M. B. Akpan and . Imperialism, Americo-Libérian Rule Over the People of, Africa

A. Weinstein and F. O. Gatell, Amercican Negro Slavery A Modern Reader

B. John, W. Et-mary-france, and . Berry, Long Memory The Black Experience in America, 1982.

F. Hope, . Moss, and A. Jr-alfred, From Slavery to Freedom A history of African Americans Seventh Edition, 1994.

F. Claude, Histoire de l'esclavage aux Etats-Unis, 1998.

G. Eugene and D. , Roll Jordan Roll The world the Slaves Made .Vintage Books, 1976.

I. William, Liberia; or the Early History and Signal Preservation of The American Colony of Free Negroes on the Coast of Africa

S. Kenneth and M. , The Peculiar Institution. London. Eyre and Spottishwoode, 1964.

T. Ronald, Iron Cages Race and Culture in 19 th ?Century, 1990.

Y. Allan, the American Colonization Society An Avenue to Freedom, 2006.

Z. Howard, Une Histoire populaire des États-Unis De 1492 à nos jours, Agone- Montréal(Lux), 2002.