APA (7th ed.) Citation

Zeman, Z. A. (1971). A diplomatic history of the First World War.

Chicago Style (17th ed.) Citation

Zeman, Zbyněk A. A Diplomatic History of the First World War. 1971.

MLA (9th ed.) Citation

Zeman, Zbyněk A. A Diplomatic History of the First World War. 1971.

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