Ekei Essien Oku (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ekei Essien Oku" in Portuguese language version.

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bbc.co.uk

Udo, Mary. «OKU, Ekei Essien». Biographical Legacy and Research Foundation (em inglês)

Bellagamba, Alice; Greene, Sandra E.; Klein, Martin A. (13 de maio de 2005). African Voices on Slavery and the Slave Trade: Volume 1, The Sources. Cambridge University Press (em inglês). [S.l.: s.n.] ISBN 978-0-521-19470-9
Oku, Ekei Essien (1989). The Kings & Chiefs of Old Calabar (1785-1925). Glad Tidings Press (em inglês). [S.l.: s.n.] ISBN 978-978-30541-0-3