APA (7th ed.) Citation

Wedgwood, C. V. (1971). The Thirty Years War. Cape.

Chicago Style (17th ed.) Citation

Wedgwood, C. V. The Thirty Years War. London: Cape, 1971.

MLA (9th ed.) Citation

Wedgwood, C. V. The Thirty Years War. Cape, 1971.

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