APA (7th ed.) Citation

(1990). The Blackwell biographical dictionary of British political life in the twentieth century. Blackwell.

Chicago Style (17th ed.) Citation

The Blackwell Biographical Dictionary of British Political Life in the Twentieth Century. Blackwell, 1990.

MLA (8th ed.) Citation

The Blackwell Biographical Dictionary of British Political Life in the Twentieth Century. Blackwell, 1990.