APA (7th ed.) Citation

Cain, P. J., & Hopkins, A. G. British imperialism. Longman.

Chicago Style (17th ed.) Citation

Cain, Peter J., and Antony G. Hopkins. British Imperialism. London u.a: Longman.

MLA (9th ed.) Citation

Cain, Peter J., and Antony G. Hopkins. British Imperialism. Longman.