APA (7th ed.) Citation

Boulger, D. C. (1898). The Congo State, or, The growth of civilisation in Central Africa. W. Thacker & Co..

Chicago Style (17th ed.) Citation

Boulger, Demetrius Charles. The Congo State, or, The Growth of Civilisation in Central Africa. London: W. Thacker & Co., 1898.

MLA (9th ed.) Citation

Boulger, Demetrius Charles. The Congo State, or, The Growth of Civilisation in Central Africa. W. Thacker & Co., 1898.