APA (7th ed.) Citation

Morel, E. D. (1911). Nigeria: Its peoples and its problems. Smith, Elder.

Chicago Style (17th ed.) Citation

Morel, E. D. Nigeria: Its Peoples and Its Problems. London: Smith, Elder, 1911.

MLA (8th ed.) Citation

Morel, E. D. Nigeria: Its Peoples and Its Problems. Smith, Elder, 1911.