APA (7th ed.) Citation

Knaplund, P. (1942). The British empire, 1815-1939. H. Hamilton.

Chicago Style (17th ed.) Citation

Knaplund, Paul. The British Empire, 1815-1939. London: H. Hamilton, 1942.

MLA (8th ed.) Citation

Knaplund, Paul. The British Empire, 1815-1939. H. Hamilton, 1942.

Warning: These citations may not always be 100% accurate.