Morel, E. D. (1911). Nigeria: Its peoples and its problems. Smith, Elder.
Chicago-viite (17. p.)Morel, E. D. Nigeria: Its Peoples and Its Problems. London: Smith, Elder, 1911.
MLA-viite (8. p.)Morel, E. D. Nigeria: Its Peoples and Its Problems. Smith, Elder, 1911.
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