ber 2022.↑ 20.0 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 Lobban, Richard Andrew Jr.; Mendy, Peter Karibe (2013). Historical Dictionary of the Republic of Guinea-Bissau (4th ed.). Lanham: Scarecrow Press. ISBN 978-0-8108-5310-2.↑ Bowman, Joye L. (22 January 2009). "Abdul Njai: Ally and Enemy of the Portuguese in Guinea-Bissau, 1895–1919". The Journal of African History. 27 (3): 463–479. doi:10.1017/S0021853700023276. S2CID 162344466.↑ Mendy, Peter Karibe; Jr, Richard A. Lobban (17 October 2013). Historical Dictionary of the Republic of Guinea-Bissau (ඉංග්‍රීසි බසින්). Scarecrow Press. p. 160. ISBN 978-0-8108-8027-6.↑ Barry, Boubacar (1998). Senegambia and the Atlantic slave trade. Cambridge, UK: Cambridge University Press. p. 21.↑ 24.0 24.1 24.2 Wright, Donald R (1987). "The Epic of Kalefa Saane as a guide to the Nature of Precolonial Senegambian Society-and Vice Versa". History in Africa. 14: 287–309. doi:10.2307/3171842. JSTOR 3171842. S2CID 162851641.↑ Page, Willie F.