APA (7th ed.) Citation

Langhorne, R. (1973). Anglo-German negotiations concerning the future of the Portuguese colonies: 1911 - 1914. The historical journal.

Chicago Style (17th ed.) Citation

Langhorne, Richard. "Anglo-German Negotiations Concerning the Future of the Portuguese Colonies: 1911 - 1914." The Historical Journal 1973.

MLA (8th ed.) Citation

Langhorne, Richard. "Anglo-German Negotiations Concerning the Future of the Portuguese Colonies: 1911 - 1914." The Historical Journal, 1973.

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