APA (7th ed.) Citation

Wedgwood, C. V. (1969). The thirty years war. P. Smith.

Chicago Style (17th ed.) Citation

Wedgwood, Cicely Veronica. The Thirty Years War. Gloucester, Mass: P. Smith, 1969.

MLA (9th ed.) Citation

Wedgwood, Cicely Veronica. The Thirty Years War. P. Smith, 1969.